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10002012031 = 1115716335531
BaseRepresentation
bin10010101000010101…
…01001011101111111
3221211001112212010001
421110022221131333
5130441003341111
64332253455131
7502600461634
oct112412513577
927731485101
1010002012031
114272969750
121b317a14a7
13c3524321b
146ac52818b
153d81591c1
hex2542a977f

10002012031 has 16 divisors (see below), whose sum is σ = 11048462208. Its totient is φ = 8979141600.

The previous prime is 10002012023. The next prime is 10002012037. The reversal of 10002012031 is 13021020001.

It is not a de Polignac number, because 10002012031 - 23 = 10002012023 is a prime.

It is a super-2 number, since 2×100020120312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10002011999 and 10002012017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002012037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263736 + ... + 299266.

It is an arithmetic number, because the mean of its divisors is an integer number (690528888).

Almost surely, 210002012031 is an apocalyptic number.

10002012031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10002012031 is a deficient number, since it is larger than the sum of its proper divisors (1046450177).

10002012031 is a wasteful number, since it uses less digits than its factorization.

10002012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35862.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10002012031 its reverse (13021020001), we get a palindrome (23023032032).

The spelling of 10002012031 in words is "ten billion, two million, twelve thousand, thirty-one".

Divisors: 1 11 157 163 1727 1793 25591 35531 281501 390841 5578367 5791553 61362037 63707083 909273821 10002012031