231434022402 has 48 divisors (see below), whose sum is σ = 554519410848. Its totient is φ = 69170811840.

The previous prime is 231434022401. The next prime is 231434022481. The reversal of 231434022402 is 204220434132.

231434022402 is a `hidden beast` number, since 2 + 3 + 1 + 434 + 0 + 224 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (231434022401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7991428 + ... + 8020335.

It is an arithmetic number, because the mean of its divisors is an integer number (11552487726).

Almost surely, 2^231434022402 is an apocalyptic number.

231434022402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231434022402 is an abundant number, since it is smaller than the sum of its proper divisors (323085388446).

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

231434022402 is a wasteful number, since it uses less digits than its factorization.

231434022402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16011855 (or 16011852 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 231434022402 its reverse (204220434132), we get a palindrome (435654456534).

The spelling of 231434022402 in words is "two hundred thirty-one billion, four hundred thirty-four million, twenty-two thousand, four hundred two".