11996933531 has 12 divisors (see below), whose sum is σ = 13190662296. Its totient is φ = 10903036320.

The previous prime is 11996933491. The next prime is 11996933573. The reversal of 11996933531 is 13533969911.

It is not a de Polignac number, because 11996933531 - 2⁶ = 11996933467 is a prime.

It is a super-2 number, since 2×11996933531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11996933531.

It is not an unprimeable number, because it can be changed into a prime (11996933591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450860 + ... + 476726.

It is an arithmetic number, because the mean of its divisors is an integer number (1099221858).

Almost surely, 2^11996933531 is an apocalyptic number.

11996933531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11996933531 is a deficient number, since it is larger than the sum of its proper divisors (1193728765).

11996933531 is a wasteful number, since it uses less digits than its factorization.

11996933531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29722 (or 29711 counting only the distinct ones).

The product of its digits is 590490, while the sum is 50.

The spelling of 11996933531 in words is "eleven billion, nine hundred ninety-six million, nine hundred thirty-three thousand, five hundred thirty-one".