231930 has 32 divisors (see below), whose sum is σ = 619200. Its totient is φ = 61776.

The previous prime is 231923. The next prime is 231943. The reversal of 231930 is 39132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (19350).

2²³¹⁹³⁰ is an apocalyptic number.

231930 is an abundant number, since it is smaller than the sum of its proper divisors (387270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231930 is a wasteful number, since it uses less digits than its factorization.

231930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 231930 is about 481.5911128748. The cubic root of 231930 is about 61.4401559444.

It can be divided in two parts, 23 and 1930, that added together give a triangular number (1953 = T₆₂).

The spelling of 231930 in words is "two hundred thirty-one thousand, nine hundred thirty".