31112330121031 has 4 divisors (see below), whose sum is σ = 32942467186992. Its totient is φ = 29282193055072.

The previous prime is 31112330121023. The next prime is 31112330121073. The reversal of 31112330121031 is 13012103321113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31112330121031 - 2³ = 31112330121023 is a prime.

It is a super-2 number, since 2×31112330121031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31112330120993 and 31112330121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112330121001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915068532955 + ... + 915068532988.

It is an arithmetic number, because the mean of its divisors is an integer number (8235616796748).

Almost surely, 2^{31112330121031} is an apocalyptic number.

31112330121031 is a deficient number, since it is larger than the sum of its proper divisors (1830137065961).

31112330121031 is a wasteful number, since it uses less digits than its factorization.

31112330121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830137065960.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31112330121031 its reverse (13012103321113), we get a palindrome (44124433442144).

The spelling of 31112330121031 in words is "thirty-one trillion, one hundred twelve billion, three hundred thirty million, one hundred twenty-one thousand, thirty-one".