198273831 has 16 divisors (see below), whose sum is σ = 303469824. Its totient is φ = 112797504.

The previous prime is 198273821. The next prime is 198273847. The reversal of 198273831 is 138372891.

It is not a de Polignac number, because 198273831 - 2¹⁷ = 198142759 is a prime.

It is a super-2 number, since 2×198273831² = 78625024118833122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198273811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16030 + ... + 25563.

It is an arithmetic number, because the mean of its divisors is an integer number (18966864).

Almost surely, 2^198273831 is an apocalyptic number.

198273831 is a deficient number, since it is larger than the sum of its proper divisors (105195993).

198273831 is a wasteful number, since it uses less digits than its factorization.

198273831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41830.

The product of its digits is 72576, while the sum is 42.

The square root of 198273831 is about 14080.9740785217. The cubic root of 198273831 is about 583.1162343870.

The spelling of 198273831 in words is "one hundred ninety-eight million, two hundred seventy-three thousand, eight hundred thirty-one".