231242986 has 8 divisors (see below), whose sum is σ = 373546404. Its totient is φ = 106727520.

The previous prime is 231242969. The next prime is 231243011. The reversal of 231242986 is 689242132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 230280625 + 962361 = 15175^2 + 981^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4446955 + ... + 4447006.

Almost surely, 2^231242986 is an apocalyptic number.

231242986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

231242986 is a deficient number, since it is larger than the sum of its proper divisors (142303418).

231242986 is a wasteful number, since it uses less digits than its factorization.

231242986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893976.

The product of its digits is 41472, while the sum is 37.

The square root of 231242986 is about 15206.6757050974. The cubic root of 231242986 is about 613.7943073443.

The spelling of 231242986 in words is "two hundred thirty-one million, two hundred forty-two thousand, nine hundred eighty-six".