231231883 has 4 divisors (see below), whose sum is σ = 238691008. Its totient is φ = 223772760.

The previous prime is 231231863. The next prime is 231231901. The reversal of 231231883 is 388132132.

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

It is a cyclic number.

It is not a de Polignac number, because 231231883 - 2²⁵ = 197677451 is a prime.

It is a super-3 number, since 3×231231883³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 7459093 = 231231883 / (2 + 3 + 1 + 2 + 3 + 1 + 8 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231231823) 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, 3729516 + ... + 3729577.

It is an arithmetic number, because the mean of its divisors is an integer number (59672752).

Almost surely, 2^231231883 is an apocalyptic number.

231231883 is a deficient number, since it is larger than the sum of its proper divisors (7459125).

231231883 is an equidigital number, since it uses as much as digits as its factorization.

231231883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459124.

The product of its digits is 6912, while the sum is 31.

The square root of 231231883 is about 15206.3106307875. The cubic root of 231231883 is about 613.7844835259.

The spelling of 231231883 in words is "two hundred thirty-one million, two hundred thirty-one thousand, eight hundred eighty-three".