31120312323331 has 8 divisors (see below), whose sum is σ = 38799350429184. Its totient is φ = 24249594018120.

The previous prime is 31120312323323. The next prime is 31120312323337. The reversal of 31120312323331 is 13332321302113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31120312323331 - 2³ = 31120312323323 is a prime.

It is a super-2 number, since 2×31120312323331² (a number of 28 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 31120312323331.

It is not an unprimeable number, because it can be changed into a prime (31120312323337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202079950075 + ... + 202079950228.

It is an arithmetic number, because the mean of its divisors is an integer number (4849918803648).

Almost surely, 2^{31120312323331} is an apocalyptic number.

31120312323331 is a deficient number, since it is larger than the sum of its proper divisors (7679038105853).

31120312323331 is a wasteful number, since it uses less digits than its factorization.

31120312323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404159900321.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31120312323331 its reverse (13332321302113), we get a palindrome (44452633625444).

The spelling of 31120312323331 in words is "thirty-one trillion, one hundred twenty billion, three hundred twelve million, three hundred twenty-three thousand, three hundred thirty-one".