31113121330131 has 16 divisors (see below), whose sum is σ = 41641530099456. Its totient is φ = 20663434686816.

The previous prime is 31113121330097. The next prime is 31113121330201. The reversal of 31113121330131 is 13103312131113.

It is not a de Polignac number, because 31113121330131 - 2¹¹ = 31113121328083 is a prime.

It is a super-2 number, since 2×31113121330131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31113121330231) 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 15 ways as a sum of consecutive naturals, for example, 1463620 + ... + 8022993.

It is an arithmetic number, because the mean of its divisors is an integer number (2602595631216).

Almost surely, 2^{31113121330131} is an apocalyptic number.

31113121330131 is a deficient number, since it is larger than the sum of its proper divisors (10528408769325).

31113121330131 is a wasteful number, since it uses less digits than its factorization.

31113121330131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9490762.

The product of its (nonzero) digits is 486, while the sum is 24.

Adding to 31113121330131 its reverse (13103312131113), we get a palindrome (44216433461244).

The spelling of 31113121330131 in words is "thirty-one trillion, one hundred thirteen billion, one hundred twenty-one million, three hundred thirty thousand, one hundred thirty-one".