31465532385 has 24 divisors (see below), whose sum is σ = 62331721920. Its totient is φ = 14384243232.

The previous prime is 31465532327. The next prime is 31465532389. The reversal of 31465532385 is 58323556413.

31465532385 is a `hidden beast` number, since 3 + 14 + 6 + 553 + 2 + 3 + 85 = 666.

It is not a de Polignac number, because 31465532385 - 2¹⁵ = 31465499617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31465532385.

It is not an unprimeable number, because it can be changed into a prime (31465532389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49944975 + ... + 49945604.

It is an arithmetic number, because the mean of its divisors is an integer number (2597155080).

Almost surely, 2^31465532385 is an apocalyptic number.

31465532385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31465532385 is a deficient number, since it is larger than the sum of its proper divisors (30866189535).

31465532385 is a wasteful number, since it uses less digits than its factorization.

31465532385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99890597 (or 99890594 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 31465532385 in words is "thirty-one billion, four hundred sixty-five million, five hundred thirty-two thousand, three hundred eighty-five".