100133111031 has 4 divisors (see below), whose sum is σ = 133510814712. Its totient is φ = 66755407352.

The previous prime is 100133111027. The next prime is 100133111059. The reversal of 100133111031 is 130111331001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100133111031 - 2² = 100133111027 is a prime.

It is a super-2 number, since 2×100133111031² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100133111031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100133111831) 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, 16688851836 + ... + 16688851841.

It is an arithmetic number, because the mean of its divisors is an integer number (33377703678).

Almost surely, 2^100133111031 is an apocalyptic number.

100133111031 is a deficient number, since it is larger than the sum of its proper divisors (33377703681).

100133111031 is an equidigital number, since it uses as much as digits as its factorization.

100133111031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33377703680.

The product of its (nonzero) digits is 27, while the sum is 15.

Adding to 100133111031 its reverse (130111331001), we get a palindrome (230244442032).

The spelling of 100133111031 in words is "one hundred billion, one hundred thirty-three million, one hundred eleven thousand, thirty-one".