231342404 has 24 divisors (see below), whose sum is σ = 426884640. Its totient is φ = 109396224.

The previous prime is 231342383. The next prime is 231342431. The reversal of 231342404 is 404243132.

It is a self number, because there is not a number n which added to its sum of digits gives 231342404.

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, 48887 + ... + 53409.

It is an arithmetic number, because the mean of its divisors is an integer number (17786860).

Almost surely, 2^231342404 is an apocalyptic number.

It is an amenable number.

231342404 is a deficient number, since it is larger than the sum of its proper divisors (195542236).

231342404 is a wasteful number, since it uses less digits than its factorization.

231342404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219 (or 5217 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 231342404 is about 15209.9442471036. The cubic root of 231342404 is about 613.8822573408.

Adding to 231342404 its reverse (404243132), we get a palindrome (635585536).

The spelling of 231342404 in words is "two hundred thirty-one million, three hundred forty-two thousand, four hundred four".