31103131012032 has 28 divisors (see below), whose sum is σ = 82293700803176. Its totient is φ = 10367710337280.

The previous prime is 31103131012021. The next prime is 31103131012043. The reversal of 31103131012032 is 23021013130113.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31103131012021) and next prime (31103131012043).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 80997736819 + ... + 80997737202.

Almost surely, 2^{31103131012032} is an apocalyptic number.

31103131012032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31103131012032 is an abundant number, since it is smaller than the sum of its proper divisors (51190569791144).

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

31103131012032 is a wasteful number, since it uses less digits than its factorization.

31103131012032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161995474036 (or 161995474026 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31103131012032 its reverse (23021013130113), we get a palindrome (54124144142145).

The spelling of 31103131012032 in words is "thirty-one trillion, one hundred three billion, one hundred thirty-one million, twelve thousand, thirty-two".