231257634 has 8 divisors (see below), whose sum is σ = 462515280. Its totient is φ = 77085876.

The previous prime is 231257633. The next prime is 231257641. The reversal of 231257634 is 436752132.

It is a sphenic number, since it is the product of 3 distinct primes.

231257634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 231257595 and 231257604.

It is not an unprimeable number, because it can be changed into a prime (231257633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19271464 + ... + 19271475.

It is an arithmetic number, because the mean of its divisors is an integer number (57814410).

Almost surely, 2^231257634 is an apocalyptic number.

231257634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231257634 is a wasteful number, since it uses less digits than its factorization.

231257634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38542944.

The product of its digits is 30240, while the sum is 33.

The square root of 231257634 is about 15207.1573280479. The cubic root of 231257634 is about 613.8072672605.

The spelling of 231257634 in words is "two hundred thirty-one million, two hundred fifty-seven thousand, six hundred thirty-four".