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10031211030 = 23523131110977
BaseRepresentation
bin10010101011110100…
…00010001000010110
3221220002111022121110
421111322002020112
5131020442223110
64335215355450
7503403613131
oct112572021026
927802438543
1010031211030
1142883a2355
121b3b522b86
13c3b2c7739
146b2369218
153da9c5a20
hex255e82216

10031211030 has 64 divisors (see below), whose sum is σ = 25313637888. Its totient is φ = 2539130880.

The previous prime is 10031211017. The next prime is 10031211061. The reversal of 10031211030 is 3011213001.

It is a junction number, because it is equal to n+sod(n) for n = 10031210997 and 10031211015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34902 + ... + 145878.

It is an arithmetic number, because the mean of its divisors is an integer number (395525592).

Almost surely, 210031211030 is an apocalyptic number.

10031211030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10031211030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12656818944).

10031211030 is an abundant number, since it is smaller than the sum of its proper divisors (15282426858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10031211030 is a wasteful number, since it uses less digits than its factorization.

10031211030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111141.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 10031211030 its reverse (3011213001), we get a palindrome (13042424031).

The spelling of 10031211030 in words is "ten billion, thirty-one million, two hundred eleven thousand, thirty".

Divisors: 1 2 3 5 6 10 15 23 30 46 69 115 131 138 230 262 345 393 655 690 786 1310 1965 3013 3930 6026 9039 15065 18078 30130 45195 90390 110977 221954 332931 554885 665862 1109770 1664655 2552471 3329310 5104942 7657413 12762355 14537987 15314826 25524710 29075974 38287065 43613961 72689935 76574130 87227922 145379870 218069805 334373701 436139610 668747402 1003121103 1671868505 2006242206 3343737010 5015605515 10031211030