31020120033101 has 6 divisors (see below), whose sum is σ = 32738686240302. Its totient is φ = 29387482136280.

The previous prime is 31020120033073. The next prime is 31020120033107. The reversal of 31020120033101 is 10133002102013.

It can be written as a sum of positive squares in only one way, i.e., 23042630475076 + 7977489558025 = 4800274^2 + 2824445^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31020120033101 is a prime.

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 31020120033101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020120033107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42964154810 + ... + 42964155531.

It is an arithmetic number, because the mean of its divisors is an integer number (5456447706717).

Almost surely, 2^{31020120033101} is an apocalyptic number.

It is an amenable number.

31020120033101 is a deficient number, since it is larger than the sum of its proper divisors (1718566207201).

31020120033101 is an equidigital number, since it uses as much as digits as its factorization.

31020120033101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85928310379 (or 85928310360 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31020120033101 its reverse (10133002102013), we get a palindrome (41153122135114).

The spelling of 31020120033101 in words is "thirty-one trillion, twenty billion, one hundred twenty million, thirty-three thousand, one hundred one".