197396231 has 4 divisors (see below), whose sum is σ = 209007792. Its totient is φ = 185784672.

The previous prime is 197396209. The next prime is 197396233. The reversal of 197396231 is 132693791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132693791 = 127 ⋅1044833.

It is a cyclic number.

It is not a de Polignac number, because 197396231 - 2¹⁸ = 197134087 is a prime.

It is a super-2 number, since 2×197396231² = 77930544026010722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197396233) 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, 5805755 + ... + 5805788.

It is an arithmetic number, because the mean of its divisors is an integer number (52251948).

Almost surely, 2^197396231 is an apocalyptic number.

197396231 is a deficient number, since it is larger than the sum of its proper divisors (11611561).

197396231 is a wasteful number, since it uses less digits than its factorization.

197396231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11611560.

The product of its digits is 61236, while the sum is 41.

The square root of 197396231 is about 14049.7769021433. The cubic root of 197396231 is about 582.2546318708.

The spelling of 197396231 in words is "one hundred ninety-seven million, three hundred ninety-six thousand, two hundred thirty-one".