231376939 has 2 divisors, whose sum is σ = 231376940. Its totient is φ = 231376938.

The previous prime is 231376909. The next prime is 231376979. The reversal of 231376939 is 939673132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231376939 - 2¹³ = 231368747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231376895 and 231376904.

It is not a weakly prime, because it can be changed into another prime (231376909) 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 as a sum of consecutive naturals, namely, 115688469 + 115688470.

It is an arithmetic number, because the mean of its divisors is an integer number (115688470).

Almost surely, 2^231376939 is an apocalyptic number.

231376939 is a deficient number, since it is larger than the sum of its proper divisors (1).

231376939 is an equidigital number, since it uses as much as digits as its factorization.

231376939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 43.

The square root of 231376939 is about 15211.0794817462. The cubic root of 231376939 is about 613.9128027842.

The spelling of 231376939 in words is "two hundred thirty-one million, three hundred seventy-six thousand, nine hundred thirty-nine".