312534531 has 20 divisors (see below), whose sum is σ = 467949592. Its totient is φ = 207875808.

The previous prime is 312534527. The next prime is 312534533. The reversal of 312534531 is 135435213.

312534531 is a `hidden beast` number, since 3 + 125 + 3 + 4 + 531 = 666.

It is not a de Polignac number, because 312534531 - 2² = 312534527 is a prime.

It is a super-2 number, since 2×312534531² = 195355666134779922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312534495 and 312534504.

It is not an unprimeable number, because it can be changed into a prime (312534533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32796 + ... + 41238.

Almost surely, 2^312534531 is an apocalyptic number.

312534531 is a deficient number, since it is larger than the sum of its proper divisors (155415061).

312534531 is an equidigital number, since it uses as much as digits as its factorization.

312534531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8912 (or 8903 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 312534531 is about 17678.6461868549. The cubic root of 312534531 is about 678.6293983094.

Adding to 312534531 its reverse (135435213), we get a palindrome (447969744).

The spelling of 312534531 in words is "three hundred twelve million, five hundred thirty-four thousand, five hundred thirty-one".