163198531 has 2 divisors, whose sum is σ = 163198532. Its totient is φ = 163198530.

The previous prime is 163198463. The next prime is 163198591. The reversal of 163198531 is 135891361.

163198531 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 163198531 - 2⁷ = 163198403 is a prime.

It is a super-2 number, since 2×163198531² = 53267521041115922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163198591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81599265 + 81599266.

It is an arithmetic number, because the mean of its divisors is an integer number (81599266).

Almost surely, 2^163198531 is an apocalyptic number.

163198531 is a deficient number, since it is larger than the sum of its proper divisors (1).

163198531 is an equidigital number, since it uses as much as digits as its factorization.

163198531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 163198531 is about 12774.9180427899. The cubic root of 163198531 is about 546.4772435541.

The spelling of 163198531 in words is "one hundred sixty-three million, one hundred ninety-eight thousand, five hundred thirty-one".