3131442 has 12 divisors (see below), whose sum is σ = 6784830. Its totient is φ = 1043808.

The previous prime is 3131441. The next prime is 3131467. The reversal of 3131442 is 2441313.

3131442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2047761 + 1083681 = 1431^2 + 1041^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 173969 = 3131442 / (3 + 1 + 3 + 1 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (3131441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86967 + ... + 87002.

Almost surely, 2^3131442 is an apocalyptic number.

3131442 is an abundant number, since it is smaller than the sum of its proper divisors (3653388).

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

3131442 is a wasteful number, since it uses less digits than its factorization.

3131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173977 (or 173974 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 3131442 is about 1769.5880876633. The cubic root of 3131442 is about 146.3012794099.

Adding to 3131442 its reverse (2441313), we get a palindrome (5572755).

The spelling of 3131442 in words is "three million, one hundred thirty-one thousand, four hundred forty-two".