31504612838 has 8 divisors (see below), whose sum is σ = 47698573032. Its totient is φ = 15605088496.

The previous prime is 31504612829. The next prime is 31504612859. The reversal of 31504612838 is 83821640513.

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

It is a junction number, because it is equal to n+sod(n) for n = 31504612795 and 31504612804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73608695 + ... + 73609122.

It is an arithmetic number, because the mean of its divisors is an integer number (5962321629).

Almost surely, 2^31504612838 is an apocalyptic number.

31504612838 is a deficient number, since it is larger than the sum of its proper divisors (16193960194).

31504612838 is a wasteful number, since it uses less digits than its factorization.

31504612838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147217926.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 31504612838 in words is "thirty-one billion, five hundred four million, six hundred twelve thousand, eight hundred thirty-eight".