198456131 has 2 divisors, whose sum is σ = 198456132. Its totient is φ = 198456130.

The previous prime is 198456107. The next prime is 198456151. The reversal of 198456131 is 131654891.

198456131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198456131 - 2¹⁰ = 198455107 is a prime.

It is a super-2 number, since 2×198456131² = 78769671862978322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198456151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99228065 + 99228066.

It is an arithmetic number, because the mean of its divisors is an integer number (99228066).

Almost surely, 2^198456131 is an apocalyptic number.

198456131 is a deficient number, since it is larger than the sum of its proper divisors (1).

198456131 is an equidigital number, since it uses as much as digits as its factorization.

198456131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 198456131 is about 14087.4458650246. The cubic root of 198456131 is about 583.2948922333.

The spelling of 198456131 in words is "one hundred ninety-eight million, four hundred fifty-six thousand, one hundred thirty-one".