11952897631 has 2 divisors, whose sum is σ = 11952897632. Its totient is φ = 11952897630.

The previous prime is 11952897611. The next prime is 11952897667. The reversal of 11952897631 is 13679825911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11952897631 - 2¹⁹ = 11952373343 is a prime.

It is a super-2 number, since 2×11952897631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11952897611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5976448815 + 5976448816.

It is an arithmetic number, because the mean of its divisors is an integer number (5976448816).

Almost surely, 2^11952897631 is an apocalyptic number.

11952897631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11952897631 is an equidigital number, since it uses as much as digits as its factorization.

11952897631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 52.

The spelling of 11952897631 in words is "eleven billion, nine hundred fifty-two million, eight hundred ninety-seven thousand, six hundred thirty-one".