31604207542 has 8 divisors (see below), whose sum is σ = 47604664800. Its totient is φ = 15735985944.

The previous prime is 31604207519. The next prime is 31604207587. The reversal of 31604207542 is 24570240613.

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 = 31604207498 and 31604207507.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 33058317 + ... + 33059272.

It is an arithmetic number, because the mean of its divisors is an integer number (5950583100).

Almost surely, 2^31604207542 is an apocalyptic number.

31604207542 is a deficient number, since it is larger than the sum of its proper divisors (16000457258).

31604207542 is a wasteful number, since it uses less digits than its factorization.

31604207542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66117830.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 31604207542 in words is "thirty-one billion, six hundred four million, two hundred seven thousand, five hundred forty-two".