31201089 has 8 divisors (see below), whose sum is σ = 41629152. Its totient is φ = 20786880.

The previous prime is 31201067. The next prime is 31201099. The reversal of 31201089 is 98010213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31201089 - 2⁹ = 31200577 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (31201039) 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, 4249 + ... + 8969.

It is an arithmetic number, because the mean of its divisors is an integer number (5203644).

Almost surely, 2^31201089 is an apocalyptic number.

It is an amenable number.

31201089 is a deficient number, since it is larger than the sum of its proper divisors (10428063).

31201089 is a wasteful number, since it uses less digits than its factorization.

31201089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6927.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 31201089 is about 5585.7934977942. The cubic root of 31201089 is about 314.8158460023.

The spelling of 31201089 in words is "thirty-one million, two hundred one thousand, eighty-nine".