197111423 has 4 divisors (see below), whose sum is σ = 203469888. Its totient is φ = 190752960.

The previous prime is 197111417. The next prime is 197111429. The reversal of 197111423 is 324111791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324111791 = 23 ⋅14091817.

It is an interprime number because it is at equal distance from previous prime (197111417) and next prime (197111429).

It is a cyclic number.

It is not a de Polignac number, because 197111423 - 2⁶ = 197111359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197111429) 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, 3179186 + ... + 3179247.

It is an arithmetic number, because the mean of its divisors is an integer number (50867472).

Almost surely, 2^197111423 is an apocalyptic number.

197111423 is a deficient number, since it is larger than the sum of its proper divisors (6358465).

197111423 is an equidigital number, since it uses as much as digits as its factorization.

197111423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358464.

The product of its digits is 1512, while the sum is 29.

The square root of 197111423 is about 14039.6375665471. The cubic root of 197111423 is about 581.9744667849.

The spelling of 197111423 in words is "one hundred ninety-seven million, one hundred eleven thousand, four hundred twenty-three".