231271249 has 16 divisors (see below), whose sum is σ = 266158080. Its totient is φ = 198743760.

The previous prime is 231271241. The next prime is 231271267. The reversal of 231271249 is 942172132.

It is a cyclic number.

It is not a de Polignac number, because 231271249 - 2³ = 231271241 is a prime.

It is a super-2 number, since 2×231271249² = 106972781228040002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231271249.

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 15 ways as a sum of consecutive naturals, for example, 125952 + ... + 127774.

It is an arithmetic number, because the mean of its divisors is an integer number (16634880).

Almost surely, 2^231271249 is an apocalyptic number.

It is an amenable number.

231271249 is a deficient number, since it is larger than the sum of its proper divisors (34886831).

231271249 is a wasteful number, since it uses less digits than its factorization.

231271249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460.

The product of its digits is 6048, while the sum is 31.

The square root of 231271249 is about 15207.6049725129. The cubic root of 231271249 is about 613.8193127323.

The spelling of 231271249 in words is "two hundred thirty-one million, two hundred seventy-one thousand, two hundred forty-nine".