312677531 has 4 divisors (see below), whose sum is σ = 312918072. Its totient is φ = 312436992.

The previous prime is 312677513. The next prime is 312677567. The reversal of 312677531 is 135776213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135776213 = 2903 ⋅46771.

It is a cyclic number.

It is not a de Polignac number, because 312677531 - 2¹⁸ = 312415387 is a prime.

It is a super-2 number, since 2×312677531² = 195534476784511922, 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 = 312677491 and 312677500.

It is not an unprimeable number, because it can be changed into a prime (312677731) 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, 118310 + ... + 120923.

It is an arithmetic number, because the mean of its divisors is an integer number (78229518).

Almost surely, 2^312677531 is an apocalyptic number.

312677531 is a deficient number, since it is larger than the sum of its proper divisors (240541).

312677531 is a wasteful number, since it uses less digits than its factorization.

312677531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240540.

The product of its digits is 26460, while the sum is 35.

The square root of 312677531 is about 17682.6901516709. The cubic root of 312677531 is about 678.7328846949.

The spelling of 312677531 in words is "three hundred twelve million, six hundred seventy-seven thousand, five hundred thirty-one".