31390482 has 16 divisors (see below), whose sum is σ = 63261792. Its totient is φ = 10383360.

The previous prime is 31390481. The next prime is 31390493. The reversal of 31390482 is 28409313.

It is not an unprimeable number, because it can be changed into a prime (31390481) 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, 19183 + ... + 20754.

It is an arithmetic number, because the mean of its divisors is an integer number (3953862).

Almost surely, 2^31390482 is an apocalyptic number.

31390482 is an abundant number, since it is smaller than the sum of its proper divisors (31871310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31390482 is a wasteful number, since it uses less digits than its factorization.

31390482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40073.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 31390482 is about 5602.7209461118. The cubic root of 31390482 is about 315.4515469136.

Adding to 31390482 its reverse (28409313), we get a palindrome (59799795).

The spelling of 31390482 in words is "thirty-one million, three hundred ninety thousand, four hundred eighty-two".