31431394848 has 96 divisors (see below), whose sum is σ = 95840115840. Its totient is φ = 8833167360.

The previous prime is 31431394847. The next prime is 31431394861. The reversal of 31431394848 is 84849313413.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 31431394797 and 31431394806.

It is not an unprimeable number, because it can be changed into a prime (31431394847) 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, 342393 + ... + 424376.

It is an arithmetic number, because the mean of its divisors is an integer number (998334540).

Almost surely, 2^31431394848 is an apocalyptic number.

It is an amenable number.

31431394848 is an abundant number, since it is smaller than the sum of its proper divisors (64408720992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31431394848 is a wasteful number, since it uses less digits than its factorization.

31431394848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766850 (or 766842 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The spelling of 31431394848 in words is "thirty-one billion, four hundred thirty-one million, three hundred ninety-four thousand, eight hundred forty-eight".