331220113033 has 2 divisors, whose sum is σ = 331220113034. Its totient is φ = 331220113032.

The previous prime is 331220112989. The next prime is 331220113069. The reversal of 331220113033 is 330311022133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170348529289 + 160871583744 = 412733^2 + 401088^2 .

It is an emirp because it is prime and its reverse (330311022133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331220113033 - 2²¹ = 331218015881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331220112995 and 331220113013.

It is not a weakly prime, because it can be changed into another prime (331220113073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165610056516 + 165610056517.

It is an arithmetic number, because the mean of its divisors is an integer number (165610056517).

Almost surely, 2^331220113033 is an apocalyptic number.

It is an amenable number.

331220113033 is a deficient number, since it is larger than the sum of its proper divisors (1).

331220113033 is an equidigital number, since it uses as much as digits as its factorization.

331220113033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 331220113033 its reverse (330311022133), we get a palindrome (661531135166).

The spelling of 331220113033 in words is "three hundred thirty-one billion, two hundred twenty million, one hundred thirteen thousand, thirty-three".