31162216198 has 8 divisors (see below), whose sum is σ = 49203499320. Its totient is φ = 14761049760.

The previous prime is 31162216193. The next prime is 31162216237. The reversal of 31162216198 is 89161226113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31162216198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31162216193) by changing a digit.

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, 410029123 + ... + 410029198.

It is an arithmetic number, because the mean of its divisors is an integer number (6150437415).

Almost surely, 2^31162216198 is an apocalyptic number.

31162216198 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

31162216198 is a deficient number, since it is larger than the sum of its proper divisors (18041283122).

31162216198 is a wasteful number, since it uses less digits than its factorization.

31162216198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820058342.

The product of its digits is 31104, while the sum is 40.

The spelling of 31162216198 in words is "thirty-one billion, one hundred sixty-two million, two hundred sixteen thousand, one hundred ninety-eight".