231375616 has 36 divisors (see below), whose sum is σ = 486165400. Its totient is φ = 109596672.

The previous prime is 231375583. The next prime is 231375619. The reversal of 231375616 is 616573132.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231375619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18921 + ... + 28648.

Almost surely, 2^231375616 is an apocalyptic number.

It is an amenable number.

231375616 is an abundant number, since it is smaller than the sum of its proper divisors (254789784).

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

231375616 is an equidigital number, since it uses as much as digits as its factorization.

231375616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47604 (or 47590 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 231375616 is about 15211.0359936462. The cubic root of 231375616 is about 613.9116326760.

The spelling of 231375616 in words is "two hundred thirty-one million, three hundred seventy-five thousand, six hundred sixteen".