199020331 has 2 divisors, whose sum is σ = 199020332. Its totient is φ = 199020330.

The previous prime is 199020323. The next prime is 199020347. The reversal of 199020331 is 133020991.

It is a weak prime.

It is an emirp because it is prime and its reverse (133020991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199020331 - 2³ = 199020323 is a prime.

It is a super-2 number, since 2×199020331² = 79218184302699122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199020331.

It is not a weakly prime, because it can be changed into another prime (199020131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99510165 + 99510166.

It is an arithmetic number, because the mean of its divisors is an integer number (99510166).

Almost surely, 2^199020331 is an apocalyptic number.

199020331 is a deficient number, since it is larger than the sum of its proper divisors (1).

199020331 is an equidigital number, since it uses as much as digits as its factorization.

199020331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 199020331 is about 14107.4565744503. The cubic root of 199020331 is about 583.8471278026.

The spelling of 199020331 in words is "one hundred ninety-nine million, twenty thousand, three hundred thirty-one".