313230531 has 4 divisors (see below), whose sum is σ = 417640712. Its totient is φ = 208820352.

The previous prime is 313230527. The next prime is 313230569. The reversal of 313230531 is 135032313.

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

It is not a de Polignac number, because 313230531 - 2² = 313230527 is a prime.

It is a super-2 number, since 2×313230531² = 196226731101083922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313230498 and 313230507.

It is not an unprimeable number, because it can be changed into a prime (313230571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52205086 + ... + 52205091.

It is an arithmetic number, because the mean of its divisors is an integer number (104410178).

Almost surely, 2^313230531 is an apocalyptic number.

313230531 is a deficient number, since it is larger than the sum of its proper divisors (104410181).

313230531 is a wasteful number, since it uses less digits than its factorization.

313230531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104410180.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 313230531 is about 17698.3200050174. The cubic root of 313230531 is about 679.1327836225.

Adding to 313230531 its reverse (135032313), we get a palindrome (448262844).

The spelling of 313230531 in words is "three hundred thirteen million, two hundred thirty thousand, five hundred thirty-one".