31321635442 has 8 divisors (see below), whose sum is σ = 47577168000. Its totient is φ = 15462579444.

The previous prime is 31321635311. The next prime is 31321635479. The reversal of 31321635442 is 24453612313.

It is a happy number.

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 = 31321635398 and 31321635407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99118942 + ... + 99119257.

It is an arithmetic number, because the mean of its divisors is an integer number (5947146000).

Almost surely, 2^31321635442 is an apocalyptic number.

31321635442 is a deficient number, since it is larger than the sum of its proper divisors (16255532558).

31321635442 is a wasteful number, since it uses less digits than its factorization.

31321635442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198238280.

The product of its digits is 51840, while the sum is 34.

The spelling of 31321635442 in words is "thirty-one billion, three hundred twenty-one million, six hundred thirty-five thousand, four hundred forty-two".