312535231 has 2 divisors, whose sum is σ = 312535232. Its totient is φ = 312535230.

The previous prime is 312535217. The next prime is 312535241. The reversal of 312535231 is 132535213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312535231 - 2¹¹ = 312533183 is a prime.

It is a super-2 number, since 2×312535231² = 195356541232446722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312535196 and 312535205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312535241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156267615 + 156267616.

It is an arithmetic number, because the mean of its divisors is an integer number (156267616).

Almost surely, 2^312535231 is an apocalyptic number.

312535231 is a deficient number, since it is larger than the sum of its proper divisors (1).

312535231 is an equidigital number, since it uses as much as digits as its factorization.

312535231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 312535231 is about 17678.6659847399. The cubic root of 312535231 is about 678.6299049630.

The spelling of 312535231 in words is "three hundred twelve million, five hundred thirty-five thousand, two hundred thirty-one".