231896555 has 16 divisors (see below), whose sum is σ = 303869664. Its totient is φ = 168487680.

The previous prime is 231896551. The next prime is 231896591. The reversal of 231896555 is 555698132.

It is not a de Polignac number, because 231896555 - 2² = 231896551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231896551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107447 + ... + 109583.

It is an arithmetic number, because the mean of its divisors is an integer number (18991854).

Almost surely, 2^231896555 is an apocalyptic number.

231896555 is a deficient number, since it is larger than the sum of its proper divisors (71973109).

231896555 is a wasteful number, since it uses less digits than its factorization.

231896555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126.

The product of its digits is 324000, while the sum is 44.

The square root of 231896555 is about 15228.1500846295. The cubic root of 231896555 is about 614.3720251768.

The spelling of 231896555 in words is "two hundred thirty-one million, eight hundred ninety-six thousand, five hundred fifty-five".