3131064631 has 2 divisors, whose sum is σ = 3131064632. Its totient is φ = 3131064630.

The previous prime is 3131064617. The next prime is 3131064661. The reversal of 3131064631 is 1364601313.

It is a weak prime.

It is an emirp because it is prime and its reverse (1364601313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131064631 is a prime.

It is a super-2 number, since 2×3131064631² = 19607131446998332322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3131064631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131064661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565532315 + 1565532316.

It is an arithmetic number, because the mean of its divisors is an integer number (1565532316).

Almost surely, 2^3131064631 is an apocalyptic number.

3131064631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131064631 is an equidigital number, since it uses as much as digits as its factorization.

3131064631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3131064631 is about 55955.9168542523. The cubic root of 3131064631 is about 1462.9540226821.

Adding to 3131064631 its reverse (1364601313), we get a palindrome (4495665944).

The spelling of 3131064631 in words is "three billion, one hundred thirty-one million, sixty-four thousand, six hundred thirty-one".