198311140 has 24 divisors (see below), whose sum is σ = 417271680. Its totient is φ = 79168608.

The previous prime is 198311131. The next prime is 198311147. The reversal of 198311140 is 41113891.

It is a junction number, because it is equal to n+sod(n) for n = 198311099 and 198311108.

It is not an unprimeable number, because it can be changed into a prime (198311147) 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 7 ways as a sum of consecutive naturals, for example, 981 + ... + 19939.

It is an arithmetic number, because the mean of its divisors is an integer number (17386320).

Almost surely, 2^198311140 is an apocalyptic number.

198311140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198311140 is an abundant number, since it is smaller than the sum of its proper divisors (218960540).

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

198311140 is a wasteful number, since it uses less digits than its factorization.

198311140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19491 (or 19489 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 198311140 is about 14082.2988180197. The cubic root of 198311140 is about 583.1528069040.

The spelling of 198311140 in words is "one hundred ninety-eight million, three hundred eleven thousand, one hundred forty".