3131042 has 4 divisors (see below), whose sum is σ = 4696566. Its totient is φ = 1565520.

The previous prime is 3131041. The next prime is 3131053. The reversal of 3131042 is 2401313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2401313 = 277 ⋅8669.

It can be written as a sum of positive squares in only one way, i.e., 3129361 + 1681 = 1769^2 + 41^2 .

It is not an unprimeable number, because it can be changed into a prime (3131041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782759 + ... + 782762.

Almost surely, 2^3131042 is an apocalyptic number.

3131042 is a deficient number, since it is larger than the sum of its proper divisors (1565524).

3131042 is a wasteful number, since it uses less digits than its factorization.

3131042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565523.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3131042 is about 1769.4750634016. The cubic root of 3131042 is about 146.2950497982.

Adding to 3131042 its reverse (2401313), we get a palindrome (5532355).

The spelling of 3131042 in words is "three million, one hundred thirty-one thousand, forty-two".