11380228731 has 28 divisors (see below), whose sum is σ = 17187232632. Its totient is φ = 7531374816.

The previous prime is 11380228709. The next prime is 11380228789. The reversal of 11380228731 is 13782208311.

It is a de Polignac number, because none of the positive numbers 2^k-11380228731 is a prime.

It is a super-2 number, since 2×11380228731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11380228231) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 42900 + ... + 156846.

Almost surely, 2^11380228731 is an apocalyptic number.

11380228731 is a deficient number, since it is larger than the sum of its proper divisors (5807003901).

11380228731 is an equidigital number, since it uses as much as digits as its factorization.

11380228731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114102 (or 114087 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 11380228731 in words is "eleven billion, three hundred eighty million, two hundred twenty-eight thousand, seven hundred thirty-one".