31896001 has 4 divisors (see below), whose sum is σ = 32072404. Its totient is φ = 31719600.

The previous prime is 31895999. The next prime is 31896019. The reversal of 31896001 is 10069813.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10069813 = 13 ⋅774601.

It can be written as a sum of positive squares in 2 ways, for example, as 5640625 + 26255376 = 2375^2 + 5124^2 .

It is a cyclic number.

It is not a de Polignac number, because 31896001 - 2¹ = 31895999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31896031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87930 + ... + 88291.

It is an arithmetic number, because the mean of its divisors is an integer number (8018101).

Almost surely, 2^31896001 is an apocalyptic number.

It is an amenable number.

31896001 is a deficient number, since it is larger than the sum of its proper divisors (176403).

31896001 is a wasteful number, since it uses less digits than its factorization.

31896001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176402.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 31896001 is about 5647.6544688924. The cubic root of 31896001 is about 317.1359035408.

The spelling of 31896001 in words is "thirty-one million, eight hundred ninety-six thousand, one".