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31012030110 = 2351033734337
BaseRepresentation
bin11100111000011101…
…100000011010011110
32222001021121100200210
4130320131200122132
51002003034430420
622125143233250
72145335622645
oct347035403236
988037540623
1031012030110
1112174534256
126015a48826
132c02c54b99
141702a0835c
15c178d49e0
hex73876069e

31012030110 has 16 divisors (see below), whose sum is σ = 74428872336. Its totient is φ = 8269874688.

The previous prime is 31012030087. The next prime is 31012030117. The reversal of 31012030110 is 1103021013.

It is a super-2 number, since 2×310120301102 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012030117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516867139 + ... + 516867198.

It is an arithmetic number, because the mean of its divisors is an integer number (4651804521).

Almost surely, 231012030110 is an apocalyptic number.

31012030110 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31012030110 is an abundant number, since it is smaller than the sum of its proper divisors (43416842226).

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

31012030110 is a wasteful number, since it uses less digits than its factorization.

31012030110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033734347.

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

Adding to 31012030110 its reverse (1103021013), we get a palindrome (32115051123).

The spelling of 31012030110 in words is "thirty-one billion, twelve million, thirty thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 15 30 1033734337 2067468674 3101203011 5168671685 6202406022 10337343370 15506015055 31012030110