31296113989 has 32 divisors (see below), whose sum is σ = 36682652160. Its totient is φ = 26147577600.

The previous prime is 31296113987. The next prime is 31296113999. The reversal of 31296113989 is 98931169213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31296113989 - 2¹ = 31296113987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31296113987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34054072 + ... + 34054990.

It is an arithmetic number, because the mean of its divisors is an integer number (1146332880).

Almost surely, 2^31296113989 is an apocalyptic number.

It is an amenable number.

31296113989 is a deficient number, since it is larger than the sum of its proper divisors (5386538171).

31296113989 is a wasteful number, since it uses less digits than its factorization.

31296113989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621.

The product of its digits is 629856, while the sum is 52.

The spelling of 31296113989 in words is "thirty-one billion, two hundred ninety-six million, one hundred thirteen thousand, nine hundred eighty-nine".