313131424 has 12 divisors (see below), whose sum is σ = 616477554. Its totient is φ = 156565696.

The previous prime is 313131389. The next prime is 313131451. The reversal of 313131424 is 424131313.

It can be written as a sum of positive squares in only one way, i.e., 202208400 + 110923024 = 14220^2 + 10532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313131395 and 313131404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4892647 + ... + 4892710.

Almost surely, 2^313131424 is an apocalyptic number.

It is an amenable number.

313131424 is a deficient number, since it is larger than the sum of its proper divisors (303346130).

313131424 is an equidigital number, since it uses as much as digits as its factorization.

313131424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785367 (or 9785359 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 313131424 is about 17695.5198849878. The cubic root of 313131424 is about 679.0611495745.

Adding to 313131424 its reverse (424131313), we get a palindrome (737262737).

The spelling of 313131424 in words is "three hundred thirteen million, one hundred thirty-one thousand, four hundred twenty-four".