10198731 has 4 divisors (see below), whose sum is σ = 13598312. Its totient is φ = 6799152.

The previous prime is 10198723. The next prime is 10198781. The reversal of 10198731 is 13789101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10198731 - 2³ = 10198723 is a prime.

It is a super-2 number, since 2×10198731² = 208028228020722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10198781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1699786 + ... + 1699791.

It is an arithmetic number, because the mean of its divisors is an integer number (3399578).

Almost surely, 2^10198731 is an apocalyptic number.

10198731 is a deficient number, since it is larger than the sum of its proper divisors (3399581).

10198731 is an equidigital number, since it uses as much as digits as its factorization.

10198731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3399580.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 10198731 is about 3193.5452086983. The cubic root of 10198731 is about 216.8612944136.

The spelling of 10198731 in words is "ten million, one hundred ninety-eight thousand, seven hundred thirty-one".