11631506351 has 4 divisors (see below), whose sum is σ = 11633405952. Its totient is φ = 11629606752.

The previous prime is 11631506339. The next prime is 11631506377. The reversal of 11631506351 is 15360513611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15360513611 = 241 ⋅63736571.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11631506351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11631506251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940586 + ... + 952871.

It is an arithmetic number, because the mean of its divisors is an integer number (2908351488).

Almost surely, 2^11631506351 is an apocalyptic number.

11631506351 is a deficient number, since it is larger than the sum of its proper divisors (1899601).

11631506351 is an equidigital number, since it uses as much as digits as its factorization.

11631506351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899600.

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 11631506351 in words is "eleven billion, six hundred thirty-one million, five hundred six thousand, three hundred fifty-one".