31804045 has 16 divisors (see below), whose sum is σ = 46972800. Its totient is φ = 20130624.

The previous prime is 31804033. The next prime is 31804063. The reversal of 31804045 is 54040813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31804045 is a prime.

It is a super-2 number, since 2×31804045² = 2022994556724050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 34495 + ... + 35404.

It is an arithmetic number, because the mean of its divisors is an integer number (2935800).

Almost surely, 2^31804045 is an apocalyptic number.

31804045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31804045 is a deficient number, since it is larger than the sum of its proper divisors (15168755).

31804045 is a wasteful number, since it uses less digits than its factorization.

31804045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69924.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 31804045 is about 5639.5075139590. The cubic root of 31804045 is about 316.8308431533.

Adding to 31804045 its reverse (54040813), we get a palindrome (85844858).

It can be divided in two parts, 3180 and 4045, that added together give a square (7225 = 85²).

The spelling of 31804045 in words is "thirty-one million, eight hundred four thousand, forty-five".