31439026900 has 18 divisors (see below), whose sum is σ = 68222688590. Its totient is φ = 12575610720.

The previous prime is 31439026841. The next prime is 31439026909. The reversal of 31439026900 is 962093413.

It can be written as a sum of positive squares in 3 ways, for example, as 2342172816 + 29096854084 = 48396^2 + 170578^2 .

It is a super-2 number, since 2×31439026900² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31439026900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31439026909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157195035 + ... + 157195234.

Almost surely, 2^31439026900 is an apocalyptic number.

It is an amenable number.

31439026900 is an abundant number, since it is smaller than the sum of its proper divisors (36783661690).

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

31439026900 is a wasteful number, since it uses less digits than its factorization.

31439026900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314390283 (or 314390276 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 31439026900 in words is "thirty-one billion, four hundred thirty-nine million, twenty-six thousand, nine hundred".