31986133459 has 16 divisors (see below), whose sum is σ = 37202480128. Its totient is φ = 26933746752.

The previous prime is 31986133429. The next prime is 31986133469. The reversal of 31986133459 is 95433168913.

It is a cyclic number.

It is not a de Polignac number, because 31986133459 - 2⁹ = 31986132947 is a prime.

It is a super-2 number, since 2×31986133459² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31986133409) 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 15 ways as a sum of consecutive naturals, for example, 79207 + ... + 265039.

It is an arithmetic number, because the mean of its divisors is an integer number (2325155008).

Almost surely, 2^31986133459 is an apocalyptic number.

31986133459 is a deficient number, since it is larger than the sum of its proper divisors (5216346669).

31986133459 is a wasteful number, since it uses less digits than its factorization.

31986133459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186274.

The product of its digits is 2099520, while the sum is 52.

The spelling of 31986133459 in words is "thirty-one billion, nine hundred eighty-six million, one hundred thirty-three thousand, four hundred fifty-nine".