31013045 has 16 divisors (see below), whose sum is σ = 42676608. Its totient is φ = 21193920.

The previous prime is 31013041. The next prime is 31013053. The reversal of 31013045 is 54031013.

It is not a de Polignac number, because 31013045 - 2² = 31013041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10247 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (2667288).

Almost surely, 2^31013045 is an apocalyptic number.

31013045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31013045 is a deficient number, since it is larger than the sum of its proper divisors (11663563).

31013045 is a wasteful number, since it uses less digits than its factorization.

31013045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 31013045 is about 5568.9357151973. The cubic root of 31013045 is about 314.1821228347.

Adding to 31013045 its reverse (54031013), we get a palindrome (85044058).

The spelling of 31013045 in words is "thirty-one million, thirteen thousand, forty-five".