2097381931 has 2 divisors, whose sum is σ = 2097381932. Its totient is φ = 2097381930.

The previous prime is 2097381791. The next prime is 2097381943. The reversal of 2097381931 is 1391837902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2097381931 - 2¹⁹ = 2096857643 is a prime.

It is a super-3 number, since 3×2097381931³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2097381731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048690965 + 1048690966.

It is an arithmetic number, because the mean of its divisors is an integer number (1048690966).

Almost surely, 2^2097381931 is an apocalyptic number.

2097381931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097381931 is an equidigital number, since it uses as much as digits as its factorization.

2097381931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 2097381931 is about 45797.1825661798. The cubic root of 2097381931 is about 1280.0467778722.

The spelling of 2097381931 in words is "two billion, ninety-seven million, three hundred eighty-one thousand, nine hundred thirty-one".