31830490 has 16 divisors (see below), whose sum is σ = 59143680. Its totient is φ = 12321360.

The previous prime is 31830481. The next prime is 31830493. The reversal of 31830490 is 9403813.

It is not an unprimeable number, because it can be changed into a prime (31830493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51030 + ... + 51649.

It is an arithmetic number, because the mean of its divisors is an integer number (3696480).

Almost surely, 2^31830490 is an apocalyptic number.

31830490 is a deficient number, since it is larger than the sum of its proper divisors (27313190).

31830490 is a wasteful number, since it uses less digits than its factorization.

31830490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102717.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 31830490 is about 5641.8516464012. The cubic root of 31830490 is about 316.9186335634.

The spelling of 31830490 in words is "thirty-one million, eight hundred thirty thousand, four hundred ninety".