231393616 has 20 divisors (see below), whose sum is σ = 467818272. Its totient is φ = 110666336.

The previous prime is 231393611. The next prime is 231393649. The reversal of 231393616 is 616393132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231393611) 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, 314026 + ... + 314761.

Almost surely, 2^231393616 is an apocalyptic number.

It is an amenable number.

231393616 is an abundant number, since it is smaller than the sum of its proper divisors (236424656).

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

231393616 is a wasteful number, since it uses less digits than its factorization.

231393616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628818 (or 628812 counting only the distinct ones).

The product of its digits is 17496, while the sum is 34.

The square root of 231393616 is about 15211.6276578149. The cubic root of 231393616 is about 613.9275521334.

The spelling of 231393616 in words is "two hundred thirty-one million, three hundred ninety-three thousand, six hundred sixteen".