31661484 has 24 divisors (see below), whose sum is σ = 74028528. Its totient is φ = 10532160.

The previous prime is 31661477. The next prime is 31661491. The reversal of 31661484 is 48416613.

It is an interprime number because it is at equal distance from previous prime (31661477) and next prime (31661491).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4054 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (3084522).

Almost surely, 2^31661484 is an apocalyptic number.

It is an amenable number.

31661484 is an abundant number, since it is smaller than the sum of its proper divisors (42367044).

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

31661484 is a wasteful number, since it uses less digits than its factorization.

31661484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425 (or 5423 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 31661484 is about 5626.8538278509. The cubic root of 31661484 is about 316.3567380701.

The spelling of 31661484 in words is "thirty-one million, six hundred sixty-one thousand, four hundred eighty-four".