231881953 has 16 divisors (see below), whose sum is σ = 244823040. Its totient is φ = 219340800.

The previous prime is 231881939. The next prime is 231881957. The reversal of 231881953 is 359188132.

It is a cyclic number.

It is not a de Polignac number, because 231881953 - 2¹⁷ = 231750881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231881957) 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, 301153 + ... + 301921.

It is an arithmetic number, because the mean of its divisors is an integer number (15301440).

Almost surely, 2^231881953 is an apocalyptic number.

It is an amenable number.

231881953 is a deficient number, since it is larger than the sum of its proper divisors (12941087).

231881953 is a wasteful number, since it uses less digits than its factorization.

231881953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its digits is 51840, while the sum is 40.

The square root of 231881953 is about 15227.6706360494. The cubic root of 231881953 is about 614.3591297019.

The spelling of 231881953 in words is "two hundred thirty-one million, eight hundred eighty-one thousand, nine hundred fifty-three".