3131043101331 has 4 divisors (see below), whose sum is σ = 4174724135112. Its totient is φ = 2087362067552.

The previous prime is 3131043101317. The next prime is 3131043101383. The reversal of 3131043101331 is 1331013401313.

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 3131043101331 - 2⁵ = 3131043101299 is a prime.

It is a super-2 number, since 2×3131043101331² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3131043101311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521840516886 + ... + 521840516891.

It is an arithmetic number, because the mean of its divisors is an integer number (1043681033778).

Almost surely, 2^{3131043101331} is an apocalyptic number.

3131043101331 is a deficient number, since it is larger than the sum of its proper divisors (1043681033781).

3131043101331 is a wasteful number, since it uses less digits than its factorization.

3131043101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043681033780.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 3131043101331 its reverse (1331013401313), we get a palindrome (4462056502644).

The spelling of 3131043101331 in words is "three trillion, one hundred thirty-one billion, forty-three million, one hundred one thousand, three hundred thirty-one".