31459824993 has 4 divisors (see below), whose sum is σ = 41946433328. Its totient is φ = 20973216660.

The previous prime is 31459824961. The next prime is 31459825051. The reversal of 31459824993 is 39942895413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31459824993 - 2⁵ = 31459824961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31459824593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5243304163 + ... + 5243304168.

It is an arithmetic number, because the mean of its divisors is an integer number (10486608332).

Almost surely, 2^31459824993 is an apocalyptic number.

It is an amenable number.

31459824993 is a deficient number, since it is larger than the sum of its proper divisors (10486608335).

31459824993 is a wasteful number, since it uses less digits than its factorization.

31459824993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486608334.

The product of its digits is 8398080, while the sum is 57.

The spelling of 31459824993 in words is "thirty-one billion, four hundred fifty-nine million, eight hundred twenty-four thousand, nine hundred ninety-three".