199702031 has 16 divisors (see below), whose sum is σ = 216483840. Its totient is φ = 183675360.

The previous prime is 199702003. The next prime is 199702057. The reversal of 199702031 is 130207991.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199702031 is a prime.

It is a super-2 number, since 2×199702031² = 79761802371049922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199702001) 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 15 ways as a sum of consecutive naturals, for example, 122540 + ... + 124158.

It is an arithmetic number, because the mean of its divisors is an integer number (13530240).

Almost surely, 2^199702031 is an apocalyptic number.

199702031 is a deficient number, since it is larger than the sum of its proper divisors (16781809).

199702031 is a wasteful number, since it uses less digits than its factorization.

199702031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 199702031 is about 14131.5969019782. The cubic root of 199702031 is about 584.5129810812.

The spelling of 199702031 in words is "one hundred ninety-nine million, seven hundred two thousand, thirty-one".