31100131131 has 8 divisors (see below), whose sum is σ = 42249234960. Its totient is φ = 20342224032.

The previous prime is 31100131129. The next prime is 31100131151. The reversal of 31100131131 is 13113100113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31100131131 - 2¹ = 31100131129 is a prime.

It is a super-2 number, since 2×31100131131² (a number of 22 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 31100131131.

It is not an unprimeable number, because it can be changed into a prime (31100131121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97798996 + ... + 97799313.

It is an arithmetic number, because the mean of its divisors is an integer number (5281154370).

Almost surely, 2^31100131131 is an apocalyptic number.

31100131131 is a deficient number, since it is larger than the sum of its proper divisors (11149103829).

31100131131 is a wasteful number, since it uses less digits than its factorization.

31100131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195598365.

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

Adding to 31100131131 its reverse (13113100113), we get a palindrome (44213231244).

The spelling of 31100131131 in words is "thirty-one billion, one hundred million, one hundred thirty-one thousand, one hundred thirty-one".