3131142 has 16 divisors (see below), whose sum is σ = 7156992. Its totient is φ = 894600.

The previous prime is 3131137. The next prime is 3131153. The reversal of 3131142 is 2411313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37234 + ... + 37317.

It is an arithmetic number, because the mean of its divisors is an integer number (447312).

Almost surely, 2^3131142 is an apocalyptic number.

3131142 is an abundant number, since it is smaller than the sum of its proper divisors (4025850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3131142 is a wasteful number, since it uses less digits than its factorization.

3131142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74563.

The product of its digits is 72, while the sum is 15.

The square root of 3131142 is about 1769.5033201438. The cubic root of 3131142 is about 146.2966072509.

Adding to 3131142 its reverse (2411313), we get a palindrome (5542455).

The spelling of 3131142 in words is "three million, one hundred thirty-one thousand, one hundred forty-two".