231245307 has 24 divisors (see below), whose sum is σ = 349286000. Its totient is φ = 151205184.

The previous prime is 231245303. The next prime is 231245309. The reversal of 231245307 is 703542132.

231245307 is a `hidden beast` number, since 2 + 3 + 124 + 530 + 7 = 666.

It is not a de Polignac number, because 231245307 - 2² = 231245303 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231245303) 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, 74319 + ... + 77367.

Almost surely, 2^231245307 is an apocalyptic number.

231245307 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

231245307 is a deficient number, since it is larger than the sum of its proper divisors (118040693).

231245307 is an equidigital number, since it uses as much as digits as its factorization.

231245307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 231245307 is about 15206.7520200732. The cubic root of 231245307 is about 613.7963609011.

Adding to 231245307 its reverse (703542132), we get a palindrome (934787439).

The spelling of 231245307 in words is "two hundred thirty-one million, two hundred forty-five thousand, three hundred seven".