31332243131 has 16 divisors (see below), whose sum is σ = 36707007744. Its totient is φ = 26184410784.

The previous prime is 31332243121. The next prime is 31332243179. The reversal of 31332243131 is 13134223313.

It is not a de Polignac number, because 31332243131 - 2²² = 31328048827 is a prime.

It is a super-2 number, since 2×31332243131² (a number of 22 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 31332243131.

It is not an unprimeable number, because it can be changed into a prime (31332243121) 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 15 ways as a sum of consecutive naturals, for example, 74216 + ... + 261098.

It is an arithmetic number, because the mean of its divisors is an integer number (2294187984).

Almost surely, 2^31332243131 is an apocalyptic number.

31332243131 is a deficient number, since it is larger than the sum of its proper divisors (5374764613).

31332243131 is a wasteful number, since it uses less digits than its factorization.

31332243131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187490.

The product of its digits is 3888, while the sum is 26.

Adding to 31332243131 its reverse (13134223313), we get a palindrome (44466466444).

The spelling of 31332243131 in words is "thirty-one billion, three hundred thirty-two million, two hundred forty-three thousand, one hundred thirty-one".