31190089 has 8 divisors (see below), whose sum is σ = 35860608. Its totient is φ = 26573280.

The previous prime is 31190063. The next prime is 31190099. The reversal of 31190089 is 98009113.

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

It is a cyclic number.

It is not a de Polignac number, because 31190089 - 2¹¹ = 31188041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31190089.

It is not an unprimeable number, because it can be changed into a prime (31190009) 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, 12172 + ... + 14509.

It is an arithmetic number, because the mean of its divisors is an integer number (4482576).

Almost surely, 2^31190089 is an apocalyptic number.

It is an amenable number.

31190089 is a deficient number, since it is larger than the sum of its proper divisors (4670519).

31190089 is a wasteful number, since it uses less digits than its factorization.

31190089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26855.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 31190089 is about 5584.8087702266. The cubic root of 31190089 is about 314.7788453564.

The spelling of 31190089 in words is "thirty-one million, one hundred ninety thousand, eighty-nine".