31672782431 has 8 divisors (see below), whose sum is σ = 34789326720. Its totient is φ = 28701193752.

The previous prime is 31672782413. The next prime is 31672782443. The reversal of 31672782431 is 13428727613.

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 31672782431 - 2¹⁰ = 31672781407 is a prime.

It is a super-2 number, since 2×31672782431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31672782481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36238445 + ... + 36239318.

It is an arithmetic number, because the mean of its divisors is an integer number (4348665840).

Almost surely, 2^31672782431 is an apocalyptic number.

31672782431 is a deficient number, since it is larger than the sum of its proper divisors (3116544289).

31672782431 is a wasteful number, since it uses less digits than its factorization.

31672782431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72477805.

The product of its digits is 338688, while the sum is 44.

The spelling of 31672782431 in words is "thirty-one billion, six hundred seventy-two million, seven hundred eighty-two thousand, four hundred thirty-one".