3131101340531 has 4 divisors (see below), whose sum is σ = 3144202183200. Its totient is φ = 3118000497864.

The previous prime is 3131101340527. The next prime is 3131101340561. The reversal of 3131101340531 is 1350431011313.

It is a happy number.

3131101340531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3131101340531 - 2² = 3131101340527 is a prime.

It is a super-2 number, since 2×3131101340531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3131101340531.

It is not an unprimeable number, because it can be changed into a prime (3131101340501) 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, 6550420976 + ... + 6550421453.

It is an arithmetic number, because the mean of its divisors is an integer number (786050545800).

Almost surely, 2^{3131101340531} is an apocalyptic number.

3131101340531 is a deficient number, since it is larger than the sum of its proper divisors (13100842669).

3131101340531 is a wasteful number, since it uses less digits than its factorization.

3131101340531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13100842668.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 3131101340531 its reverse (1350431011313), we get a palindrome (4481532351844).

The spelling of 3131101340531 in words is "three trillion, one hundred thirty-one billion, one hundred one million, three hundred forty thousand, five hundred thirty-one".