2116491031 has 2 divisors, whose sum is σ = 2116491032. Its totient is φ = 2116491030.

The previous prime is 2116490989. The next prime is 2116491037. The reversal of 2116491031 is 1301946112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2116491031 - 2⁷ = 2116490903 is a prime.

It is a super-2 number, since 2×2116491031² = 8959068568606885922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116491037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058245515 + 1058245516.

It is an arithmetic number, because the mean of its divisors is an integer number (1058245516).

Almost surely, 2^2116491031 is an apocalyptic number.

2116491031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116491031 is an equidigital number, since it uses as much as digits as its factorization.

2116491031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 2116491031 is about 46005.3369838761. The cubic root of 2116491031 is about 1283.9225033131.

The spelling of 2116491031 in words is "two billion, one hundred sixteen million, four hundred ninety-one thousand, thirty-one".