31312142031 has 16 divisors (see below), whose sum is σ = 41879465600. Its totient is φ = 20809843488.

The previous prime is 31312142023. The next prime is 31312142041. The reversal of 31312142031 is 13024121313.

It is not a de Polignac number, because 31312142031 - 2³ = 31312142023 is a prime.

It is a super-3 number, since 3×31312142031³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31312141989 and 31312142007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312142011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3018105 + ... + 3028461.

It is an arithmetic number, because the mean of its divisors is an integer number (2617466600).

Almost surely, 2^31312142031 is an apocalyptic number.

31312142031 is a deficient number, since it is larger than the sum of its proper divisors (10567323569).

31312142031 is a wasteful number, since it uses less digits than its factorization.

31312142031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13398.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31312142031 its reverse (13024121313), we get a palindrome (44336263344).

The spelling of 31312142031 in words is "thirty-one billion, three hundred twelve million, one hundred forty-two thousand, thirty-one".