3139661504281 has 9 divisors (see below), whose sum is σ = 3170623904469. Its totient is φ = 3108998619036.

The previous prime is 3139661504261. The next prime is 3139661504299. The reversal of 3139661504281 is 1824051669313.

The square root of 3139661504281 is 1771909.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-3139661504281 is a prime.

It is a super-2 number, since 2×3139661504281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3139661504261) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 182498026 + ... + 182515228.

It is an arithmetic number, because the mean of its divisors is an integer number (352291544941).

Almost surely, 2^{3139661504281} is an apocalyptic number.

3139661504281 is the 1771909-th square number.

3139661504281 is the 885955-th centered octagonal number.

It is an amenable number.

3139661504281 is a deficient number, since it is larger than the sum of its proper divisors (30962400188).

3139661504281 is an frugal number, since it uses more digits than its factorization.

3139661504281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34612 (or 17306 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 3139661504281 by its sum of digits (49), we get a square (153843413709769 = 12403363²).

The spelling of 3139661504281 in words is "three trillion, one hundred thirty-nine billion, six hundred sixty-one million, five hundred four thousand, two hundred eighty-one".