11279518331 has 2 divisors, whose sum is σ = 11279518332. Its totient is φ = 11279518330.

The previous prime is 11279518291. The next prime is 11279518373. The reversal of 11279518331 is 13381597211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11279518331 is a prime.

It is a super-2 number, since 2×11279518331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11279518381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5639759165 + 5639759166.

It is an arithmetic number, because the mean of its divisors is an integer number (5639759166).

Almost surely, 2^11279518331 is an apocalyptic number.

11279518331 is a deficient number, since it is larger than the sum of its proper divisors (1).

11279518331 is an equidigital number, since it uses as much as digits as its factorization.

11279518331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 41.

The spelling of 11279518331 in words is "eleven billion, two hundred seventy-nine million, five hundred eighteen thousand, three hundred thirty-one".