31744442 has 8 divisors (see below), whose sum is σ = 47640756. Its totient is φ = 15864192.

The previous prime is 31744441. The next prime is 31744451. The reversal of 31744442 is 24444713.

It can be written as a sum of positive squares in 2 ways, for example, as 31483321 + 261121 = 5611^2 + 511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31744441) 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 3 ways as a sum of consecutive naturals, for example, 4778 + ... + 9290.

Almost surely, 2^31744442 is an apocalyptic number.

31744442 is a deficient number, since it is larger than the sum of its proper divisors (15896314).

31744442 is a wasteful number, since it uses less digits than its factorization.

31744442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032.

The product of its digits is 10752, while the sum is 29.

The square root of 31744442 is about 5634.2206204585. The cubic root of 31744442 is about 316.6327983477.

The spelling of 31744442 in words is "thirty-one million, seven hundred forty-four thousand, four hundred forty-two".