31040334989 has 4 divisors (see below), whose sum is σ = 31230766656. Its totient is φ = 30849903324.

The previous prime is 31040334959. The next prime is 31040335019. The reversal of 31040334989 is 98943304013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98943304013 = 89 ⋅1111722517.

It is an interprime number because it is at equal distance from previous prime (31040334959) and next prime (31040335019).

It is a cyclic number.

It is not a de Polignac number, because 31040334989 - 2²⁰ = 31039286413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040334959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95215589 + ... + 95215914.

It is an arithmetic number, because the mean of its divisors is an integer number (7807691664).

Almost surely, 2^31040334989 is an apocalyptic number.

It is an amenable number.

31040334989 is a deficient number, since it is larger than the sum of its proper divisors (190431667).

31040334989 is a wasteful number, since it uses less digits than its factorization.

31040334989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190431666.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 31040334989 in words is "thirty-one billion, forty million, three hundred thirty-four thousand, nine hundred eighty-nine".