31130204212033 has 4 divisors (see below), whose sum is σ = 31291500607108. Its totient is φ = 30968907816960.

The previous prime is 31130204211991. The next prime is 31130204212039. The reversal of 31130204212033 is 33021240203113.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5306651282689 + 25823552929344 = 2303617^2 + 5081688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31130204212033 is a prime.

It is a super-2 number, since 2×31130204212033² (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 = 31130204211989 and 31130204212007.

It is not an unprimeable number, because it can be changed into a prime (31130204212039) 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, 80648197248 + ... + 80648197633.

It is an arithmetic number, because the mean of its divisors is an integer number (7822875151777).

Almost surely, 2^{31130204212033} is an apocalyptic number.

It is an amenable number.

31130204212033 is a deficient number, since it is larger than the sum of its proper divisors (161296395075).

31130204212033 is a wasteful number, since it uses less digits than its factorization.

31130204212033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161296395074.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31130204212033 its reverse (33021240203113), we get a palindrome (64151444415146).

The spelling of 31130204212033 in words is "thirty-one trillion, one hundred thirty billion, two hundred four million, two hundred twelve thousand, thirty-three".