31002200124 has 96 divisors (see below), whose sum is σ = 83511214080. Its totient is φ = 8768233152.

The previous prime is 31002200123. The next prime is 31002200183. The reversal of 31002200124 is 42100220013.

It is a super-2 number, since 2×31002200124² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002200123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5106939 + ... + 5113005.

It is an arithmetic number, because the mean of its divisors is an integer number (869908480).

Almost surely, 2^31002200124 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 31002200124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41755607040).

31002200124 is an abundant number, since it is smaller than the sum of its proper divisors (52509013956).

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

31002200124 is a wasteful number, since it uses less digits than its factorization.

31002200124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687 (or 6685 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 31002200124 its reverse (42100220013), we get a palindrome (73102420137).

The spelling of 31002200124 in words is "thirty-one billion, two million, two hundred thousand, one hundred twenty-four".