11128928931 has 64 divisors (see below), whose sum is σ = 17460495360. Its totient is φ = 6996222720.

The previous prime is 11128928893. The next prime is 11128928969. The reversal of 11128928931 is 13982982111.

It is an interprime number because it is at equal distance from previous prime (11128928893) and next prime (11128928969).

It is not a de Polignac number, because 11128928931 - 2²⁶ = 11061820067 is a prime.

It is a super-2 number, since 2×11128928931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11168928931) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6839340 + ... + 6840966.

It is an arithmetic number, because the mean of its divisors is an integer number (272820240).

Almost surely, 2^11128928931 is an apocalyptic number.

11128928931 is a deficient number, since it is larger than the sum of its proper divisors (6331566429).

11128928931 is a wasteful number, since it uses less digits than its factorization.

11128928931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1875 counting only the distinct ones).

The product of its digits is 62208, while the sum is 45.

The spelling of 11128928931 in words is "eleven billion, one hundred twenty-eight million, nine hundred twenty-eight thousand, nine hundred thirty-one".