31435325012 has 24 divisors (see below), whose sum is σ = 67706854656. Its totient is φ = 12435952608.

The previous prime is 31435324961. The next prime is 31435325081. The reversal of 31435325012 is 21052353413.

It is a happy number.

It is a super-2 number, since 2×31435325012² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 43180028 + ... + 43180755.

It is an arithmetic number, because the mean of its divisors is an integer number (2821118944).

Almost surely, 2^31435325012 is an apocalyptic number.

It is an amenable number.

31435325012 is an abundant number, since it is smaller than the sum of its proper divisors (36271529644).

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

31435325012 is a wasteful number, since it uses less digits than its factorization.

31435325012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86360807 (or 86360805 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31435325012 its reverse (21052353413), we get a palindrome (52487678425).

The spelling of 31435325012 in words is "thirty-one billion, four hundred thirty-five million, three hundred twenty-five thousand, twelve".