231312351 has 8 divisors (see below), whose sum is σ = 315589120. Its totient is φ = 150621912.

The previous prime is 231312349. The next prime is 231312371. The reversal of 231312351 is 153213132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231312351 - 2¹ = 231312349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231312331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896431 + ... + 896688.

It is an arithmetic number, because the mean of its divisors is an integer number (39448640).

Almost surely, 2^231312351 is an apocalyptic number.

231312351 is a deficient number, since it is larger than the sum of its proper divisors (84276769).

231312351 is a wasteful number, since it uses less digits than its factorization.

231312351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793165.

The product of its digits is 540, while the sum is 21.

The square root of 231312351 is about 15208.9562758264. The cubic root of 231312351 is about 613.8556736535.

Adding to 231312351 its reverse (153213132), we get a palindrome (384525483).

The spelling of 231312351 in words is "two hundred thirty-one million, three hundred twelve thousand, three hundred fifty-one".