231056636 has 24 divisors (see below), whose sum is σ = 408220176. Its totient is φ = 114428160.

The previous prime is 231056633. The next prime is 231056641. The reversal of 231056636 is 636650132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231056633) 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, 243515 + ... + 244461.

It is an arithmetic number, because the mean of its divisors is an integer number (17009174).

Almost surely, 2^231056636 is an apocalyptic number.

It is an amenable number.

231056636 is a deficient number, since it is larger than the sum of its proper divisors (177163540).

231056636 is a wasteful number, since it uses less digits than its factorization.

231056636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 231056636 is about 15200.5472269915. The cubic root of 231056636 is about 613.6293851414.

The spelling of 231056636 in words is "two hundred thirty-one million, fifty-six thousand, six hundred thirty-six".