31482561 has 16 divisors (see below), whose sum is σ = 47784960. Its totient is φ = 18250320.

The previous prime is 31482559. The next prime is 31482569. The reversal of 31482561 is 16528413.

It is not a de Polignac number, because 31482561 - 2¹ = 31482559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31482569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19981 + ... + 21498.

It is an arithmetic number, because the mean of its divisors is an integer number (2986560).

Almost surely, 2^31482561 is an apocalyptic number.

It is an amenable number.

31482561 is a deficient number, since it is larger than the sum of its proper divisors (16302399).

31482561 is a wasteful number, since it uses less digits than its factorization.

31482561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41516.

The product of its digits is 5760, while the sum is 30.

The square root of 31482561 is about 5610.9322754779. The cubic root of 31482561 is about 315.7596881746.

The spelling of 31482561 in words is "thirty-one million, four hundred eighty-two thousand, five hundred sixty-one".