31244045 has 16 divisors (see below), whose sum is σ = 45370368. Its totient is φ = 20163840.

The previous prime is 31243967. The next prime is 31244077. The reversal of 31244045 is 54044213.

It is a de Polignac number, because none of the positive numbers 2^k-31244045 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31244045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25661 + ... + 26850.

It is an arithmetic number, because the mean of its divisors is an integer number (2835648).

Almost surely, 2^31244045 is an apocalyptic number.

31244045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31244045 is a deficient number, since it is larger than the sum of its proper divisors (14126323).

31244045 is a wasteful number, since it uses less digits than its factorization.

31244045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52540.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 31244045 is about 5589.6372869803. The cubic root of 31244045 is about 314.9602536564.

Adding to 31244045 its reverse (54044213), we get a palindrome (85288258).

The spelling of 31244045 in words is "thirty-one million, two hundred forty-four thousand, forty-five".