31225484 has 36 divisors (see below), whose sum is σ = 58183776. Its totient is φ = 14645664.

The previous prime is 31225471. The next prime is 31225487. The reversal of 31225484 is 48452213.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31225487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466019 + ... + 466085.

It is an arithmetic number, because the mean of its divisors is an integer number (1616216).

Almost surely, 2^31225484 is an apocalyptic number.

It is an amenable number.

31225484 is a deficient number, since it is larger than the sum of its proper divisors (26958292).

31225484 is a wasteful number, since it uses less digits than its factorization.

31225484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 153 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 31225484 is about 5587.9767358141. The cubic root of 31225484 is about 314.8978723260.

Adding to 31225484 its reverse (48452213), we get a palindrome (79677697).

The spelling of 31225484 in words is "thirty-one million, two hundred twenty-five thousand, four hundred eighty-four".