231937146 has 24 divisors (see below), whose sum is σ = 574320864. Its totient is φ = 66267720.

The previous prime is 231937117. The next prime is 231937163. The reversal of 231937146 is 641739132.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 231937146.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 920260 + ... + 920511.

It is an arithmetic number, because the mean of its divisors is an integer number (23930036).

Almost surely, 2^231937146 is an apocalyptic number.

231937146 is an abundant number, since it is smaller than the sum of its proper divisors (342383718).

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

231937146 is a wasteful number, since it uses less digits than its factorization.

231937146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840786 (or 1840783 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 231937146 is about 15229.4827883287. The cubic root of 231937146 is about 614.4078694925.

The spelling of 231937146 in words is "two hundred thirty-one million, nine hundred thirty-seven thousand, one hundred forty-six".