231042738 has 32 divisors (see below), whose sum is σ = 467845056. Its totient is φ = 76059648.

The previous prime is 231042709. The next prime is 231042769. The reversal of 231042738 is 837240132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293181 + ... + 293967.

It is an arithmetic number, because the mean of its divisors is an integer number (14620158).

Almost surely, 2^231042738 is an apocalyptic number.

231042738 is an abundant number, since it is smaller than the sum of its proper divisors (236802318).

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

231042738 is a wasteful number, since it uses less digits than its factorization.

231042738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 231042738 is about 15200.0900655226. The cubic root of 231042738 is about 613.6170816757.

The spelling of 231042738 in words is "two hundred thirty-one million, forty-two thousand, seven hundred thirty-eight".