4312631 has 2 divisors, whose sum is σ = 4312632. Its totient is φ = 4312630.

The previous prime is 4312571. The next prime is 4312643. The reversal of 4312631 is 1362134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4312631 - 2¹⁰ = 4311607 is a prime.

It is a super-2 number, since 2×4312631² = 37197572284322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4312691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156315 + 2156316.

It is an arithmetic number, because the mean of its divisors is an integer number (2156316).

Almost surely, 2^4312631 is an apocalyptic number.

4312631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312631 is an equidigital number, since it uses as much as digits as its factorization.

4312631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 4312631 is about 2076.6875065835. The cubic root of 4312631 is about 162.7723999236.

Adding to 4312631 its reverse (1362134), we get a palindrome (5674765).

The spelling of 4312631 in words is "four million, three hundred twelve thousand, six hundred thirty-one".