231057408 has 48 divisors (see below), whose sum is σ = 616019040. Its totient is φ = 77017088.

The previous prime is 231057401. The next prime is 231057419. The reversal of 231057408 is 804750132.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (231057401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12660 + ... + 24947.

It is an arithmetic number, because the mean of its divisors is an integer number (12833730).

Almost surely, 2^231057408 is an apocalyptic number.

It is an amenable number.

231057408 is an abundant number, since it is smaller than the sum of its proper divisors (384961632).

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

231057408 is an equidigital number, since it uses as much as digits as its factorization.

231057408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37632 (or 37612 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 231057408 is about 15200.5726207929. The cubic root of 231057408 is about 613.6300685545.

The spelling of 231057408 in words is "two hundred thirty-one million, fifty-seven thousand, four hundred eight".