11031011997 has 16 divisors (see below), whose sum is σ = 14896949760. Its totient is φ = 7259681072.

The previous prime is 11031011989. The next prime is 11031012017. The reversal of 11031011997 is 79911013011.

It is a cyclic number.

It is not a de Polignac number, because 11031011997 - 2³ = 11031011989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031011917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311638 + ... + 345224.

It is an arithmetic number, because the mean of its divisors is an integer number (931059360).

Almost surely, 2^11031011997 is an apocalyptic number.

It is an amenable number.

11031011997 is a deficient number, since it is larger than the sum of its proper divisors (3865937763).

11031011997 is a wasteful number, since it uses less digits than its factorization.

11031011997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34992.

The product of its (nonzero) digits is 1701, while the sum is 33.

The spelling of 11031011997 in words is "eleven billion, thirty-one million, eleven thousand, nine hundred ninety-seven".