31493179843 has 16 divisors (see below), whose sum is σ = 31924480896. Its totient is φ = 31065390720.

The previous prime is 31493179819. The next prime is 31493179897. The reversal of 31493179843 is 34897139413.

It is a cyclic number.

It is not a de Polignac number, because 31493179843 - 2⁹ = 31493179331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31493179943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20278155 + ... + 20279707.

It is an arithmetic number, because the mean of its divisors is an integer number (1995280056).

Almost surely, 2^31493179843 is an apocalyptic number.

31493179843 is a deficient number, since it is larger than the sum of its proper divisors (431301053).

31493179843 is a wasteful number, since it uses less digits than its factorization.

31493179843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its digits is 1959552, while the sum is 52.

The spelling of 31493179843 in words is "thirty-one billion, four hundred ninety-three million, one hundred seventy-nine thousand, eight hundred forty-three".