31074645 has 16 divisors (see below), whose sum is σ = 56822400. Its totient is φ = 14205504.

The previous prime is 31074607. The next prime is 31074649. The reversal of 31074645 is 54647013.

It is not a de Polignac number, because 31074645 - 2⁶ = 31074581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31074649) 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 15 ways as a sum of consecutive naturals, for example, 147870 + ... + 148079.

It is an arithmetic number, because the mean of its divisors is an integer number (3551400).

Almost surely, 2^31074645 is an apocalyptic number.

31074645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31074645 is a deficient number, since it is larger than the sum of its proper divisors (25747755).

31074645 is a wasteful number, since it uses less digits than its factorization.

31074645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295964.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 31074645 is about 5574.4636513301. The cubic root of 31074645 is about 314.3900011550.

The spelling of 31074645 in words is "thirty-one million, seventy-four thousand, six hundred forty-five".