747310231 has 4 divisors (see below), whose sum is σ = 748076112. Its totient is φ = 746544352.

The previous prime is 747310169. The next prime is 747310279. The reversal of 747310231 is 132013747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 747310231 - 2⁷ = 747310103 is a prime.

It is a super-2 number, since 2×747310231² = 1116945162714546722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 747310231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747350231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381475 + ... + 383428.

It is an arithmetic number, because the mean of its divisors is an integer number (187019028).

Almost surely, 2^747310231 is an apocalyptic number.

747310231 is a deficient number, since it is larger than the sum of its proper divisors (765881).

747310231 is an equidigital number, since it uses as much as digits as its factorization.

747310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765880.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 747310231 is about 27336.9755276622. The cubic root of 747310231 is about 907.4728543613.

Adding to 747310231 its reverse (132013747), we get a palindrome (879323978).

The spelling of 747310231 in words is "seven hundred forty-seven million, three hundred ten thousand, two hundred thirty-one".