231320032002 has 24 divisors (see below), whose sum is σ = 530675368236. Its totient is φ = 72570990336.

The previous prime is 231320031991. The next prime is 231320032033. The reversal of 231320032002 is 200230023132.

It is a happy number.

231320032002 is a `hidden beast` number, since 23 + 1 + 320 + 0 + 320 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 178667681481 + 52652350521 = 422691^2 + 229461^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 377973603 + ... + 377974214.

Almost surely, 2^231320032002 is an apocalyptic number.

231320032002 is an abundant number, since it is smaller than the sum of its proper divisors (299355336234).

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

231320032002 is a wasteful number, since it uses less digits than its factorization.

231320032002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755947842 (or 755947839 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 231320032002 its reverse (200230023132), we get a palindrome (431550055134).

The spelling of 231320032002 in words is "two hundred thirty-one billion, three hundred twenty million, thirty-two thousand, two".