11331331197 has 4 divisors (see below), whose sum is σ = 15108441600. Its totient is φ = 7554220796.

The previous prime is 11331331189. The next prime is 11331331213. The reversal of 11331331197 is 79113313311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11331331197 - 2³ = 11331331189 is a prime.

It is a super-2 number, since 2×11331331197² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331331597) 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, 1888555197 + ... + 1888555202.

It is an arithmetic number, because the mean of its divisors is an integer number (3777110400).

Almost surely, 2^11331331197 is an apocalyptic number.

It is an amenable number.

11331331197 is a deficient number, since it is larger than the sum of its proper divisors (3777110403).

11331331197 is an equidigital number, since it uses as much as digits as its factorization.

11331331197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777110402.

The product of its digits is 5103, while the sum is 33.

The spelling of 11331331197 in words is "eleven billion, three hundred thirty-one million, three hundred thirty-one thousand, one hundred ninety-seven".