3131100120031 has 8 divisors (see below), whose sum is σ = 3372579297360. Its totient is φ = 2889710274432.

The previous prime is 3131100120019. The next prime is 3131100120073. The reversal of 3131100120031 is 1300210011313.

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

It is a cyclic number.

It is not a de Polignac number, because 3131100120031 - 2³³ = 3122510185439 is a prime.

It is a super-2 number, since 2×3131100120031² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3131100119987 and 3131100120014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131100120011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22260121 + ... + 22400338.

It is an arithmetic number, because the mean of its divisors is an integer number (421572412170).

Almost surely, 2^{3131100120031} is an apocalyptic number.

3131100120031 is a deficient number, since it is larger than the sum of its proper divisors (241479177329).

3131100120031 is a wasteful number, since it uses less digits than its factorization.

3131100120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44665865.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 3131100120031 its reverse (1300210011313), we get a palindrome (4431310131344).

The spelling of 3131100120031 in words is "three trillion, one hundred thirty-one billion, one hundred million, one hundred twenty thousand, thirty-one".