231436907 has 16 divisors (see below), whose sum is σ = 258720000. Its totient is φ = 205559424.

The previous prime is 231436903. The next prime is 231436943. The reversal of 231436907 is 709634132.

It is not a de Polignac number, because 231436907 - 2² = 231436903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231436903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130694 + ... + 132452.

It is an arithmetic number, because the mean of its divisors is an integer number (16170000).

Almost surely, 2^231436907 is an apocalyptic number.

231436907 is a deficient number, since it is larger than the sum of its proper divisors (27283093).

231436907 is a wasteful number, since it uses less digits than its factorization.

231436907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 231436907 is about 15213.0505487887. The cubic root of 231436907 is about 613.9658359329.

The spelling of 231436907 in words is "two hundred thirty-one million, four hundred thirty-six thousand, nine hundred seven".