213231031120 has 40 divisors (see below), whose sum is σ = 497889925416. Its totient is φ = 84926343168.

The previous prime is 213231031073. The next prime is 213231031147. The reversal of 213231031120 is 21130132312.

It can be written as a sum of positive squares in 4 ways, for example, as 208167184 + 213022863936 = 14428^2 + 461544^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5701077 + ... + 5738356.

Almost surely, 2^213231031120 is an apocalyptic number.

213231031120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213231031120 is an abundant number, since it is smaller than the sum of its proper divisors (284658894296).

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

213231031120 is a wasteful number, since it uses less digits than its factorization.

213231031120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11439679 (or 11439673 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213231031120 its reverse (21130132312), we get a palindrome (234361163432).

The spelling of 213231031120 in words is "two hundred thirteen billion, two hundred thirty-one million, thirty-one thousand, one hundred twenty".