231083855 has 4 divisors (see below), whose sum is σ = 277300632. Its totient is φ = 184867080.

The previous prime is 231083837. The next prime is 231083857. The reversal of 231083855 is 558380132.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-231083855 is a prime.

It is a super-2 number, since 2×231083855² = 106799496083322050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231083857) 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, 23108381 + ... + 23108390.

It is an arithmetic number, because the mean of its divisors is an integer number (69325158).

Almost surely, 2^231083855 is an apocalyptic number.

231083855 is a deficient number, since it is larger than the sum of its proper divisors (46216777).

231083855 is an equidigital number, since it uses as much as digits as its factorization.

231083855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46216776.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 231083855 is about 15201.4425302338. The cubic root of 231083855 is about 613.6534798435.

The spelling of 231083855 in words is "two hundred thirty-one million, eighty-three thousand, eight hundred fifty-five".