3115694381 has 2 divisors, whose sum is σ = 3115694382. Its totient is φ = 3115694380.

The previous prime is 3115694371. The next prime is 3115694389. The reversal of 3115694381 is 1834965113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2384857225 + 730837156 = 48835^2 + 27034^2 .

It is a cyclic number.

It is not a de Polignac number, because 3115694381 - 2²⁶ = 3048585517 is a prime.

It is a super-2 number, since 2×3115694381² = 19415102951589946322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3115694389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557847190 + 1557847191.

It is an arithmetic number, because the mean of its divisors is an integer number (1557847191).

Almost surely, 2^3115694381 is an apocalyptic number.

It is an amenable number.

3115694381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3115694381 is an equidigital number, since it uses as much as digits as its factorization.

3115694381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 3115694381 is about 55818.4053964282. The cubic root of 3115694381 is about 1460.5562372016.

The spelling of 3115694381 in words is "three billion, one hundred fifteen million, six hundred ninety-four thousand, three hundred eighty-one".