31189840102 has 8 divisors (see below), whose sum is σ = 46840525200. Its totient is φ = 15576331704.

The previous prime is 31189839983. The next prime is 31189840111. The reversal of 31189840102 is 20104898113.

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

It is a super-2 number, since 2×31189840102² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9292077 + ... + 9295432.

It is an arithmetic number, because the mean of its divisors is an integer number (5855065650).

Almost surely, 2^31189840102 is an apocalyptic number.

31189840102 is a deficient number, since it is larger than the sum of its proper divisors (15650685098).

31189840102 is a wasteful number, since it uses less digits than its factorization.

31189840102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18588350.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 31189840102 in words is "thirty-one billion, one hundred eighty-nine million, eight hundred forty thousand, one hundred two".