231742590 has 16 divisors (see below), whose sum is σ = 556182288. Its totient is φ = 61798016.

The previous prime is 231742573. The next prime is 231742591. The reversal of 231742590 is 95247132.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231742591) 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, 3862347 + ... + 3862406.

It is an arithmetic number, because the mean of its divisors is an integer number (34761393).

Almost surely, 2^231742590 is an apocalyptic number.

231742590 is an abundant number, since it is smaller than the sum of its proper divisors (324439698).

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

231742590 is a wasteful number, since it uses less digits than its factorization.

231742590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7724763.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 231742590 is about 15223.0939693612. The cubic root of 231742590 is about 614.2360267055.

The spelling of 231742590 in words is "two hundred thirty-one million, seven hundred forty-two thousand, five hundred ninety".