31143324013 has 8 divisors (see below), whose sum is σ = 31176513216. Its totient is φ = 31110156000.

The previous prime is 31143323999. The next prime is 31143324053. The reversal of 31143324013 is 31042334113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31143324013 - 2⁹ = 31143323501 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 (31143324053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5365713 + ... + 5371513.

It is an arithmetic number, because the mean of its divisors is an integer number (3897064152).

Almost surely, 2^31143324013 is an apocalyptic number.

It is an amenable number.

31143324013 is a deficient number, since it is larger than the sum of its proper divisors (33189203).

31143324013 is a wasteful number, since it uses less digits than its factorization.

31143324013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10595.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31143324013 its reverse (31042334113), we get a palindrome (62185658126).

The spelling of 31143324013 in words is "thirty-one billion, one hundred forty-three million, three hundred twenty-four thousand, thirteen".