31143304413 has 64 divisors (see below), whose sum is σ = 52056883200. Its totient is φ = 18269634240.

The previous prime is 31143304393. The next prime is 31143304427. The reversal of 31143304413 is 31440334113.

31143304413 is a `hidden beast` number, since 311 + 4 + 3 + 304 + 41 + 3 = 666.

It is not a de Polignac number, because 31143304413 - 2¹⁸ = 31143042269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143304433) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 707668 + ... + 750386.

It is an arithmetic number, because the mean of its divisors is an integer number (813388800).

Almost surely, 2^31143304413 is an apocalyptic number.

It is an amenable number.

31143304413 is a deficient number, since it is larger than the sum of its proper divisors (20913578787).

31143304413 is a wasteful number, since it uses less digits than its factorization.

31143304413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42839 (or 42833 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31143304413 its reverse (31440334113), we get a palindrome (62583638526).

The spelling of 31143304413 in words is "thirty-one billion, one hundred forty-three million, three hundred four thousand, four hundred thirteen".