31033220020001 has 2 divisors, whose sum is σ = 31033220020002. Its totient is φ = 31033220020000.

The previous prime is 31033220019961. The next prime is 31033220020021. The reversal of 31033220020001 is 10002002233013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16094531216401 + 14938688803600 = 4011799^2 + 3865060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31033220020001 is a prime.

It is not a weakly prime, because it can be changed into another prime (31033220020021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516610010000 + 15516610010001.

It is an arithmetic number, because the mean of its divisors is an integer number (15516610010001).

Almost surely, 2^{31033220020001} is an apocalyptic number.

It is an amenable number.

31033220020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

31033220020001 is an equidigital number, since it uses as much as digits as its factorization.

31033220020001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31033220020001 its reverse (10002002233013), we get a palindrome (41035222253014).

The spelling of 31033220020001 in words is "thirty-one trillion, thirty-three billion, two hundred twenty million, twenty thousand, one".