31212030052 has 96 divisors (see below), whose sum is σ = 65002291200. Its totient is φ = 12836783232.

The previous prime is 31212030041. The next prime is 31212030067. The reversal of 31212030052 is 25003021213.

It is a super-2 number, since 2×31212030052² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22732038 + ... + 22733410.

It is an arithmetic number, because the mean of its divisors is an integer number (677107200).

Almost surely, 2^31212030052 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 31212030052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32501145600).

31212030052 is an abundant number, since it is smaller than the sum of its proper divisors (33790261148).

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

31212030052 is a wasteful number, since it uses less digits than its factorization.

31212030052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 31212030052 its reverse (25003021213), we get a palindrome (56215051265).

The spelling of 31212030052 in words is "thirty-one billion, two hundred twelve million, thirty thousand, fifty-two".