31240315153012 has 108 divisors (see below), whose sum is σ = 67293912876960. Its totient is φ = 12428500073472.

The previous prime is 31240315152997. The next prime is 31240315153039. The reversal of 31240315153012 is 21035151304213.

It is a super-2 number, since 2×31240315153012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42760039 + ... + 43484497.

Almost surely, 2^{31240315153012} 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 31240315153012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33646956438480).

31240315153012 is an abundant number, since it is smaller than the sum of its proper divisors (36053597723948).

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

31240315153012 is a wasteful number, since it uses less digits than its factorization.

31240315153012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724650 (or 724558 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 31240315153012 its reverse (21035151304213), we get a palindrome (52275466457225).

The spelling of 31240315153012 in words is "thirty-one trillion, two hundred forty billion, three hundred fifteen million, one hundred fifty-three thousand, twelve".