31142344 has 16 divisors (see below), whose sum is σ = 58492620. Its totient is φ = 15544320.

The previous prime is 31142303. The next prime is 31142381. The reversal of 31142344 is 44324113.

It can be written as a sum of positive squares in 2 ways, for example, as 24700900 + 6441444 = 4970^2 + 2538^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2092 + ... + 8164.

Almost surely, 2^31142344 is an apocalyptic number.

It is an amenable number.

31142344 is a deficient number, since it is larger than the sum of its proper divisors (27350276).

31142344 is a wasteful number, since it uses less digits than its factorization.

31142344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720 (or 6716 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 31142344 is about 5580.5325910705. The cubic root of 31142344 is about 314.6181448292.

Adding to 31142344 its reverse (44324113), we get a palindrome (75466457).

The spelling of 31142344 in words is "thirty-one million, one hundred forty-two thousand, three hundred forty-four".