231923012 has 6 divisors (see below), whose sum is σ = 405865278. Its totient is φ = 115961504.

The previous prime is 231923011. The next prime is 231923017. The reversal of 231923012 is 210329132.

It can be written as a sum of positive squares in only one way, i.e., 230007556 + 1915456 = 15166^2 + 1384^2 .

It is not an unprimeable number, because it can be changed into a prime (231923011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28990373 + ... + 28990380.

It is an arithmetic number, because the mean of its divisors is an integer number (67644213).

Almost surely, 2^231923012 is an apocalyptic number.

It is an amenable number.

231923012 is a deficient number, since it is larger than the sum of its proper divisors (173942266).

231923012 is a wasteful number, since it uses less digits than its factorization.

231923012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57980757 (or 57980755 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 231923012 is about 15229.0187471157. The cubic root of 231923012 is about 614.3953887876.

The spelling of 231923012 in words is "two hundred thirty-one million, nine hundred twenty-three thousand, twelve".