231214786 has 12 divisors (see below), whose sum is σ = 381218166. Its totient is φ = 105097520.

The previous prime is 231214783. The next prime is 231214793. The reversal of 231214786 is 687412132.

It can be written as a sum of positive squares in only one way, i.e., 184552225 + 46662561 = 13585^2 + 6831^2 .

It is not an unprimeable number, because it can be changed into a prime (231214783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 477475 + ... + 477958.

Almost surely, 2^231214786 is an apocalyptic number.

231214786 is a deficient number, since it is larger than the sum of its proper divisors (150003380).

231214786 is a wasteful number, since it uses less digits than its factorization.

231214786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955457 (or 955446 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 231214786 is about 15205.7484524768. The cubic root of 231214786 is about 613.7693556640.

The spelling of 231214786 in words is "two hundred thirty-one million, two hundred fourteen thousand, seven hundred eighty-six".