31012310000 has 200 divisors, whose sum is σ = 88774957920. Its totient is φ = 10265472000.

The previous prime is 31012309997. The next prime is 31012310047. The reversal of 31012310000 is 1321013.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×31012310000² (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 39 ways as a sum of consecutive naturals, for example, 2022362 + ... + 2037638.

Almost surely, 2^31012310000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31012310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44387478960).

31012310000 is an abundant number, since it is smaller than the sum of its proper divisors (57762647920).

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

31012310000 is a wasteful number, since it uses less digits than its factorization.

31012310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15341 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 31012310000 its reverse (1321013), we get a palindrome (31013631013).

The spelling of 31012310000 in words is "thirty-one billion, twelve million, three hundred ten thousand".