3115221377 has 2 divisors, whose sum is σ = 3115221378. Its totient is φ = 3115221376.

The previous prime is 3115221359. The next prime is 3115221427. The reversal of 3115221377 is 7731225113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3079029121 + 36192256 = 55489^2 + 6016^2 .

It is a cyclic number.

It is not a de Polignac number, because 3115221377 - 2⁶ = 3115221313 is a prime.

It is a super-2 number, since 2×3115221377² = 19409208455435552258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3115221337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557610688 + 1557610689.

It is an arithmetic number, because the mean of its divisors is an integer number (1557610689).

Almost surely, 2^3115221377 is an apocalyptic number.

It is an amenable number.

3115221377 is a deficient number, since it is larger than the sum of its proper divisors (1).

3115221377 is an equidigital number, since it uses as much as digits as its factorization.

3115221377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 32.

The square root of 3115221377 is about 55814.1682460645. The cubic root of 3115221377 is about 1460.4823228162.

The spelling of 3115221377 in words is "three billion, one hundred fifteen million, two hundred twenty-one thousand, three hundred seventy-seven".