231882993 has 24 divisors (see below), whose sum is σ = 351562848. Its totient is φ = 152712864.

The previous prime is 231882983. The next prime is 231883013. The reversal of 231882993 is 399288132.

It is not a de Polignac number, because 231882993 - 2¹⁷ = 231751921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231882923) 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 23 ways as a sum of consecutive naturals, for example, 14421 + ... + 25917.

It is an arithmetic number, because the mean of its divisors is an integer number (14648452).

Almost surely, 2^231882993 is an apocalyptic number.

It is an amenable number.

231882993 is a deficient number, since it is larger than the sum of its proper divisors (119679855).

231882993 is an equidigital number, since it uses as much as digits as its factorization.

231882993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11595 (or 11583 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 231882993 is about 15227.7047843725. The cubic root of 231882993 is about 614.3600481758.

The spelling of 231882993 in words is "two hundred thirty-one million, eight hundred eighty-two thousand, nine hundred ninety-three".