199372031 has 2 divisors, whose sum is σ = 199372032. Its totient is φ = 199372030.

The previous prime is 199372003. The next prime is 199372051. The reversal of 199372031 is 130273991.

It is a strong prime.

It is an emirp because it is prime and its reverse (130273991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199372031 - 2¹⁸ = 199109887 is a prime.

It is a super-2 number, since 2×199372031² = 79498413490129922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 199371982 and 199372000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199372051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99686015 + 99686016.

It is an arithmetic number, because the mean of its divisors is an integer number (99686016).

Almost surely, 2^199372031 is an apocalyptic number.

199372031 is a deficient number, since it is larger than the sum of its proper divisors (1).

199372031 is an equidigital number, since it uses as much as digits as its factorization.

199372031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 199372031 is about 14119.9161116488. The cubic root of 199372031 is about 584.1908417622.

The spelling of 199372031 in words is "one hundred ninety-nine million, three hundred seventy-two thousand, thirty-one".