2152164631 has 2 divisors, whose sum is σ = 2152164632. Its totient is φ = 2152164630.

The previous prime is 2152164613. The next prime is 2152164667. The reversal of 2152164631 is 1364612512.

It is a happy number.

Together with previous prime (2152164613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2152164631 is a prime.

It is a super-2 number, since 2×2152164631² = 9263625197854732322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2152164593 and 2152164602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2152164601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076082315 + 1076082316.

It is an arithmetic number, because the mean of its divisors is an integer number (1076082316).

Almost surely, 2^2152164631 is an apocalyptic number.

2152164631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152164631 is an equidigital number, since it uses as much as digits as its factorization.

2152164631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 2152164631 is about 46391.4284216384. The cubic root of 2152164631 is about 1291.0958840537.

The spelling of 2152164631 in words is "two billion, one hundred fifty-two million, one hundred sixty-four thousand, six hundred thirty-one".