231271245 has 24 divisors (see below), whose sum is σ = 401240736. Its totient is φ = 123230688.

The previous prime is 231271241. The next prime is 231271267. The reversal of 231271245 is 542172132.

It is not a de Polignac number, because 231271245 - 2² = 231271241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231271241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73474 + ... + 76556.

It is an arithmetic number, because the mean of its divisors is an integer number (16718364).

Almost surely, 2^231271245 is an apocalyptic number.

It is an amenable number.

231271245 is a deficient number, since it is larger than the sum of its proper divisors (169969491).

231271245 is a wasteful number, since it uses less digits than its factorization.

231271245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4761 (or 4758 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 231271245 is about 15207.6048409998. The cubic root of 231271245 is about 613.8193091935.

The spelling of 231271245 in words is "two hundred thirty-one million, two hundred seventy-one thousand, two hundred forty-five".