31673137542 has 16 divisors (see below), whose sum is σ = 64819444800. Its totient is φ = 10312184232.

The previous prime is 31673137519. The next prime is 31673137547. The reversal of 31673137542 is 24573137613.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31673137494 and 31673137503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31673137547) 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, 61381792 + ... + 61382307.

It is an arithmetic number, because the mean of its divisors is an integer number (4051215300).

Almost surely, 2^31673137542 is an apocalyptic number.

31673137542 is an abundant number, since it is smaller than the sum of its proper divisors (33146307258).

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

31673137542 is a wasteful number, since it uses less digits than its factorization.

31673137542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122764147.

The product of its digits is 317520, while the sum is 42.

The spelling of 31673137542 in words is "thirty-one billion, six hundred seventy-three million, one hundred thirty-seven thousand, five hundred forty-two".