231956444 has 12 divisors (see below), whose sum is σ = 406669704. Its totient is φ = 115765104.

The previous prime is 231956411. The next prime is 231956447. The reversal of 231956444 is 444659132.

It is a junction number, because it is equal to n+sod(n) for n = 231956398 and 231956407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231956447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50819 + ... + 55194.

It is an arithmetic number, because the mean of its divisors is an integer number (33889142).

Almost surely, 2^231956444 is an apocalyptic number.

It is an amenable number.

231956444 is a deficient number, since it is larger than the sum of its proper divisors (174713260).

231956444 is a wasteful number, since it uses less digits than its factorization.

231956444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106564 (or 106562 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 231956444 is about 15230.1163488662. The cubic root of 231956444 is about 614.4249093306.

The spelling of 231956444 in words is "two hundred thirty-one million, nine hundred fifty-six thousand, four hundred forty-four".