2120968931 has 2 divisors, whose sum is σ = 2120968932. Its totient is φ = 2120968930.

The previous prime is 2120968919. The next prime is 2120968973. The reversal of 2120968931 is 1398690212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120968931 - 2⁶ = 2120968867 is a prime.

It is a super-2 number, since 2×2120968931² = 8997018412534565522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2120968901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060484465 + 1060484466.

It is an arithmetic number, because the mean of its divisors is an integer number (1060484466).

Almost surely, 2^2120968931 is an apocalyptic number.

2120968931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120968931 is an equidigital number, since it uses as much as digits as its factorization.

2120968931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 2120968931 is about 46053.9784492068. The cubic root of 2120968931 is about 1284.8273385073.

The spelling of 2120968931 in words is "two billion, one hundred twenty million, nine hundred sixty-eight thousand, nine hundred thirty-one".