198075131 has 2 divisors, whose sum is σ = 198075132. Its totient is φ = 198075130.

The previous prime is 198075049. The next prime is 198075167. The reversal of 198075131 is 131570891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198075131 is a prime.

It is a super-2 number, since 2×198075131² = 78467515041334322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198075091 and 198075100.

It is not a weakly prime, because it can be changed into another prime (198075181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99037565 + 99037566.

It is an arithmetic number, because the mean of its divisors is an integer number (99037566).

Almost surely, 2^198075131 is an apocalyptic number.

198075131 is a deficient number, since it is larger than the sum of its proper divisors (1).

198075131 is an equidigital number, since it uses as much as digits as its factorization.

198075131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 198075131 is about 14073.9166901044. The cubic root of 198075131 is about 582.9213794205.

The spelling of 198075131 in words is "one hundred ninety-eight million, seventy-five thousand, one hundred thirty-one".