715311231 has 8 divisors (see below), whose sum is σ = 959262000. Its totient is φ = 474117312.

The previous prime is 715311217. The next prime is 715311239. The reversal of 715311231 is 132113517.

It is a happy number.

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

It is not a de Polignac number, because 715311231 - 2⁵ = 715311199 is a prime.

It is a super-2 number, since 2×715311231² = 1023340314389470722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715311239) 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, 688606 + ... + 689643.

It is an arithmetic number, because the mean of its divisors is an integer number (119907750).

Almost surely, 2^715311231 is an apocalyptic number.

715311231 is a deficient number, since it is larger than the sum of its proper divisors (243950769).

715311231 is a wasteful number, since it uses less digits than its factorization.

715311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378425.

The product of its digits is 630, while the sum is 24.

The square root of 715311231 is about 26745.3029708022. The cubic root of 715311231 is about 894.3311299334.

Adding to 715311231 its reverse (132113517), we get a palindrome (847424748).

The spelling of 715311231 in words is "seven hundred fifteen million, three hundred eleven thousand, two hundred thirty-one".