231057738 has 16 divisors (see below), whose sum is σ = 513461760. Its totient is φ = 77019228.

The previous prime is 231057733. The next prime is 231057763. The reversal of 231057738 is 837750132.

231057738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231057731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139370 + ... + 2139477.

It is an arithmetic number, because the mean of its divisors is an integer number (32091360).

Almost surely, 2^231057738 is an apocalyptic number.

231057738 is an abundant number, since it is smaller than the sum of its proper divisors (282404022).

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

231057738 is a wasteful number, since it uses less digits than its factorization.

231057738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278858 (or 4278852 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 231057738 is about 15200.5834756433. The cubic root of 231057738 is about 613.6303606865.

The spelling of 231057738 in words is "two hundred thirty-one million, fifty-seven thousand, seven hundred thirty-eight".