11020313217931 has 2 divisors, whose sum is σ = 11020313217932. Its totient is φ = 11020313217930.

The previous prime is 11020313217923. The next prime is 11020313217943. The reversal of 11020313217931 is 13971231302011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11020313217931 - 2³ = 11020313217923 is a prime.

It is a super-2 number, since 2×11020313217931² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11020313217961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510156608965 + 5510156608966.

It is an arithmetic number, because the mean of its divisors is an integer number (5510156608966).

Almost surely, 2^{11020313217931} is an apocalyptic number.

11020313217931 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020313217931 is an equidigital number, since it uses as much as digits as its factorization.

11020313217931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

Adding to 11020313217931 its reverse (13971231302011), we get a palindrome (24991544519942).

The spelling of 11020313217931 in words is "eleven trillion, twenty billion, three hundred thirteen million, two hundred seventeen thousand, nine hundred thirty-one".