31534045 has 4 divisors (see below), whose sum is σ = 37840860. Its totient is φ = 25227232.

The previous prime is 31534033. The next prime is 31534051. The reversal of 31534045 is 54043513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5707321 + 25826724 = 2389^2 + 5082^2 .

It is a cyclic number.

It is not a de Polignac number, because 31534045 - 2⁹ = 31533533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3153400 + ... + 3153409.

It is an arithmetic number, because the mean of its divisors is an integer number (9460215).

Almost surely, 2^31534045 is an apocalyptic number.

It is an amenable number.

31534045 is a deficient number, since it is larger than the sum of its proper divisors (6306815).

31534045 is an equidigital number, since it uses as much as digits as its factorization.

31534045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306814.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 31534045 is about 5615.5182307602. The cubic root of 31534045 is about 315.9317169397.

Adding to 31534045 its reverse (54043513), we get a palindrome (85577558).

The spelling of 31534045 in words is "thirty-one million, five hundred thirty-four thousand, forty-five".