313432531 has 8 divisors (see below), whose sum is σ = 330724800. Its totient is φ = 296219880.

The previous prime is 313432501. The next prime is 313432543. The reversal of 313432531 is 135234313.

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

It is not a de Polignac number, because 313432531 - 2⁷ = 313432403 is a prime.

It is a super-2 number, since 2×313432531² = 196479902978131922, 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 = 313432496 and 313432505.

It is not an unprimeable number, because it can be changed into a prime (313432501) 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, 11725 + ... + 27646.

It is an arithmetic number, because the mean of its divisors is an integer number (41340600).

Almost surely, 2^313432531 is an apocalyptic number.

313432531 is a deficient number, since it is larger than the sum of its proper divisors (17292269).

313432531 is a wasteful number, since it uses less digits than its factorization.

313432531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39809.

The product of its digits is 3240, while the sum is 25.

The square root of 313432531 is about 17704.0258415989. The cubic root of 313432531 is about 679.2787414496.

Adding to 313432531 its reverse (135234313), we get a palindrome (448666844).

The spelling of 313432531 in words is "three hundred thirteen million, four hundred thirty-two thousand, five hundred thirty-one".