231245971 has 16 divisors (see below), whose sum is σ = 262009440. Its totient is φ = 202164480.

The previous prime is 231245953. The next prime is 231246013. The reversal of 231245971 is 179542132.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 231245971 - 2⁷ = 231245843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231245921) 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, 87055 + ... + 89671.

It is an arithmetic number, because the mean of its divisors is an integer number (16375590).

Almost surely, 2^231245971 is an apocalyptic number.

231245971 is a deficient number, since it is larger than the sum of its proper divisors (30763469).

231245971 is a wasteful number, since it uses less digits than its factorization.

231245971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934.

The product of its digits is 15120, while the sum is 34.

The square root of 231245971 is about 15206.7738524646. The cubic root of 231245971 is about 613.7969483874.

The spelling of 231245971 in words is "two hundred thirty-one million, two hundred forty-five thousand, nine hundred seventy-one".