31045450 has 12 divisors (see below), whose sum is σ = 57744630. Its totient is φ = 12418160.

The previous prime is 31045447. The next prime is 31045493. The reversal of 31045450 is 5454013.

It can be written as a sum of positive squares in 3 ways, for example, as 28313041 + 2732409 = 5321^2 + 1653^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 310405 + ... + 310504.

Almost surely, 2^31045450 is an apocalyptic number.

31045450 is a deficient number, since it is larger than the sum of its proper divisors (26699180).

31045450 is a wasteful number, since it uses less digits than its factorization.

31045450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620921 (or 620916 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 31045450 is about 5571.8443984017. The cubic root of 31045450 is about 314.2915125849.

Adding to 31045450 its reverse (5454013), we get a palindrome (36499463).

The spelling of 31045450 in words is "thirty-one million, forty-five thousand, four hundred fifty".