31100011121131 has 4 divisors (see below), whose sum is σ = 31273754200200. Its totient is φ = 30926268042064.

The previous prime is 31100011121119. The next prime is 31100011121141. The reversal of 31100011121131 is 13112111000113.

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 31100011121131 - 2³⁵ = 31065651382763 is a prime.

It is a super-2 number, since 2×31100011121131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31100011121111) 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, 86871539266 + ... + 86871539623.

It is an arithmetic number, because the mean of its divisors is an integer number (7818438550050).

Almost surely, 2^{31100011121131} is an apocalyptic number.

31100011121131 is a deficient number, since it is larger than the sum of its proper divisors (173743079069).

31100011121131 is a wasteful number, since it uses less digits than its factorization.

31100011121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173743079068.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 31100011121131 its reverse (13112111000113), we get a palindrome (44212122121244).

The spelling of 31100011121131 in words is "thirty-one trillion, one hundred billion, eleven million, one hundred twenty-one thousand, one hundred thirty-one".