4311631 has 2 divisors, whose sum is σ = 4311632. Its totient is φ = 4311630.

The previous prime is 4311611. The next prime is 4311667. The reversal of 4311631 is 1361134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4311631 - 2¹¹ = 4309583 is a prime.

It is a super-2 number, since 2×4311631² = 37180323760322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4311599 and 4311608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4311611) 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 as a sum of consecutive naturals, namely, 2155815 + 2155816.

It is an arithmetic number, because the mean of its divisors is an integer number (2155816).

Almost surely, 2^4311631 is an apocalyptic number.

4311631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4311631 is an equidigital number, since it uses as much as digits as its factorization.

4311631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 4311631 is about 2076.4467245754. The cubic root of 4311631 is about 162.7598178917.

Adding to 4311631 its reverse (1361134), we get a palindrome (5672765).

The spelling of 4311631 in words is "four million, three hundred eleven thousand, six hundred thirty-one".