16199431 has 8 divisors (see below), whose sum is σ = 16547328. Its totient is φ = 15855000.

The previous prime is 16199413. The next prime is 16199437. The reversal of 16199431 is 13499161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16199431 - 2¹⁷ = 16068359 is a prime.

It is a super-2 number, since 2×16199431² = 524843129447522, 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 (16199437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9966 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (2068416).

Almost surely, 2^16199431 is an apocalyptic number.

16199431 is a deficient number, since it is larger than the sum of its proper divisors (347897).

16199431 is a wasteful number, since it uses less digits than its factorization.

16199431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733.

The product of its digits is 5832, while the sum is 34.

The square root of 16199431 is about 4024.8516742856. The cubic root of 16199431 is about 253.0268371288.

The spelling of 16199431 in words is "sixteen million, one hundred ninety-nine thousand, four hundred thirty-one".