199010431 has 2 divisors, whose sum is σ = 199010432. Its totient is φ = 199010430.

The previous prime is 199010419. The next prime is 199010437. The reversal of 199010431 is 134010991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199010431 - 2¹³ = 199002239 is a prime.

It is a super-2 number, since 2×199010431² = 79210303293611522, which contains 22 as substring.

It is equal to p_11027098 and since 199010431 and 11027098 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199010431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199010437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99505215 + 99505216.

It is an arithmetic number, because the mean of its divisors is an integer number (99505216).

Almost surely, 2^199010431 is an apocalyptic number.

199010431 is a deficient number, since it is larger than the sum of its proper divisors (1).

199010431 is an equidigital number, since it uses as much as digits as its factorization.

199010431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 199010431 is about 14107.1056918136. The cubic root of 199010431 is about 583.8374467441.

It can be divided in two parts, 1990 and 10431, that added together give a palindrome (12421).

The spelling of 199010431 in words is "one hundred ninety-nine million, ten thousand, four hundred thirty-one".