31794225 has 24 divisors (see below), whose sum is σ = 52829952. Its totient is φ = 16872000.

The previous prime is 31794221. The next prime is 31794281. The reversal of 31794225 is 52249713.

It is not a de Polignac number, because 31794225 - 2² = 31794221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31794221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15775 + ... + 17675.

It is an arithmetic number, because the mean of its divisors is an integer number (2201248).

Almost surely, 2^31794225 is an apocalyptic number.

It is an amenable number.

31794225 is a deficient number, since it is larger than the sum of its proper divisors (21035727).

31794225 is a wasteful number, since it uses less digits than its factorization.

31794225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2132 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 31794225 is about 5638.6368033417. The cubic root of 31794225 is about 316.7982309583.

The spelling of 31794225 in words is "thirty-one million, seven hundred ninety-four thousand, two hundred twenty-five".