312532531 has 2 divisors, whose sum is σ = 312532532. Its totient is φ = 312532530.

The previous prime is 312532529. The next prime is 312532537. The reversal of 312532531 is 135235213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312532531 - 2¹ = 312532529 is a prime.

It is a super-2 number, since 2×312532531² = 195353165866531922, which contains 22 as substring.

Together with 312532529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 312532496 and 312532505.

It is not a weakly prime, because it can be changed into another prime (312532537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156266265 + 156266266.

It is an arithmetic number, because the mean of its divisors is an integer number (156266266).

Almost surely, 2^312532531 is an apocalyptic number.

312532531 is a deficient number, since it is larger than the sum of its proper divisors (1).

312532531 is an equidigital number, since it uses as much as digits as its factorization.

312532531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 25.

The square root of 312532531 is about 17678.5896213471. The cubic root of 312532531 is about 678.6279507235.

Adding to 312532531 its reverse (135235213), we get a palindrome (447767744).

The spelling of 312532531 in words is "three hundred twelve million, five hundred thirty-two thousand, five hundred thirty-one".