31112040131 has 16 divisors (see below), whose sum is σ = 33620057856. Its totient is φ = 28716981216.

The previous prime is 31112040121. The next prime is 31112040133. The reversal of 31112040131 is 13104021113.

It is a cyclic number.

It is not a de Polignac number, because 31112040131 - 2³⁰ = 30038298307 is a prime.

It is a super-2 number, since 2×31112040131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112040133) 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, 107420 + ... + 271593.

It is an arithmetic number, because the mean of its divisors is an integer number (2101253616).

Almost surely, 2^31112040131 is an apocalyptic number.

31112040131 is a deficient number, since it is larger than the sum of its proper divisors (2508017725).

31112040131 is a wasteful number, since it uses less digits than its factorization.

31112040131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379162.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31112040131 its reverse (13104021113), we get a palindrome (44216061244).

The spelling of 31112040131 in words is "thirty-one billion, one hundred twelve million, forty thousand, one hundred thirty-one".