313040631 has 16 divisors (see below), whose sum is σ = 429668064. Its totient is φ = 202635264.

The previous prime is 313040621. The next prime is 313040639. The reversal of 313040631 is 136040313.

It is not a de Polignac number, because 313040631 - 2¹³ = 313032439 is a prime.

It is a super-2 number, since 2×313040631² = 195988873313756322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313040598 and 313040607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313040639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5275 + ... + 25571.

It is an arithmetic number, because the mean of its divisors is an integer number (26854254).

Almost surely, 2^313040631 is an apocalyptic number.

313040631 is a deficient number, since it is larger than the sum of its proper divisors (116627433).

313040631 is a wasteful number, since it uses less digits than its factorization.

313040631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20450.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 313040631 is about 17692.9542756432. The cubic root of 313040631 is about 678.9955115770.

Adding to 313040631 its reverse (136040313), we get a palindrome (449080944).

The spelling of 313040631 in words is "three hundred thirteen million, forty thousand, six hundred thirty-one".