3157142881 has 4 divisors (see below), whose sum is σ = 3178051264. Its totient is φ = 3136234500.

The previous prime is 3157142867. The next prime is 3157142899. The reversal of 3157142881 is 1882417513.

3157142881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3157142881 - 2¹⁵ = 3157110113 is a prime.

It is a super-2 number, since 2×3157142881² = 19935102342097960322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3157142801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10453965 + ... + 10454266.

It is an arithmetic number, because the mean of its divisors is an integer number (794512816).

Almost surely, 2^3157142881 is an apocalyptic number.

It is an amenable number.

3157142881 is a deficient number, since it is larger than the sum of its proper divisors (20908383).

3157142881 is a wasteful number, since it uses less digits than its factorization.

3157142881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20908382.

The product of its digits is 53760, while the sum is 40.

The square root of 3157142881 is about 56188.4586102876. The cubic root of 3157142881 is about 1467.0043861128.

The spelling of 3157142881 in words is "three billion, one hundred fifty-seven million, one hundred forty-two thousand, eight hundred eighty-one".