231404308 has 6 divisors (see below), whose sum is σ = 404957546. Its totient is φ = 115702152.

The previous prime is 231404279. The next prime is 231404317. The reversal of 231404308 is 803404132.

It can be written as a sum of positive squares in only one way, i.e., 230979204 + 425104 = 15198^2 + 652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28925535 + ... + 28925542.

Almost surely, 2^231404308 is an apocalyptic number.

It is an amenable number.

231404308 is a deficient number, since it is larger than the sum of its proper divisors (173553238).

231404308 is a wasteful number, since it uses less digits than its factorization.

231404308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57851081 (or 57851079 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 231404308 is about 15211.9790954366. The cubic root of 231404308 is about 613.9370079003.

The spelling of 231404308 in words is "two hundred thirty-one million, four hundred four thousand, three hundred eight".