3139703381 has 2 divisors, whose sum is σ = 3139703382. Its totient is φ = 3139703380.

The previous prime is 3139703377. The next prime is 3139703383. The reversal of 3139703381 is 1833079313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2718058225 + 421645156 = 52135^2 + 20534^2 .

It is a cyclic number.

It is not a de Polignac number, because 3139703381 - 2² = 3139703377 is a prime.

It is a super-2 number, since 2×3139703381² = 19715474641325662322, which contains 22 as substring.

Together with 3139703383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3139703383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569851690 + 1569851691.

It is an arithmetic number, because the mean of its divisors is an integer number (1569851691).

Almost surely, 2^3139703381 is an apocalyptic number.

It is an amenable number.

3139703381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139703381 is an equidigital number, since it uses as much as digits as its factorization.

3139703381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3139703381 is about 56033.0561454576. The cubic root of 3139703381 is about 1464.2982394591.

The spelling of 3139703381 in words is "three billion, one hundred thirty-nine million, seven hundred three thousand, three hundred eighty-one".