31344742 has 16 divisors (see below), whose sum is σ = 55237392. Its totient is φ = 13151520.

The previous prime is 31344739. The next prime is 31344749. The reversal of 31344742 is 24744313.

It is a self number, because there is not a number n which added to its sum of digits gives 31344742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54513 + ... + 55084.

It is an arithmetic number, because the mean of its divisors is an integer number (3452337).

Almost surely, 2^31344742 is an apocalyptic number.

31344742 is a deficient number, since it is larger than the sum of its proper divisors (23892650).

31344742 is a wasteful number, since it uses less digits than its factorization.

31344742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109623.

The product of its digits is 8064, while the sum is 28.

The square root of 31344742 is about 5598.6375128240. The cubic root of 31344742 is about 315.2982545067.

The spelling of 31344742 in words is "thirty-one million, three hundred forty-four thousand, seven hundred forty-two".