197023423 has 4 divisors (see below), whose sum is σ = 199722448. Its totient is φ = 194324400.

The previous prime is 197023417. The next prime is 197023429. The reversal of 197023423 is 324320791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324320791 = 31 ⋅10461961.

It is an interprime number because it is at equal distance from previous prime (197023417) and next prime (197023429).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197023423 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 (197023429) 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, 1349403 + ... + 1349548.

It is an arithmetic number, because the mean of its divisors is an integer number (49930612).

Almost surely, 2^197023423 is an apocalyptic number.

197023423 is a deficient number, since it is larger than the sum of its proper divisors (2699025).

197023423 is an equidigital number, since it uses as much as digits as its factorization.

197023423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699024.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 197023423 is about 14036.5032326431. The cubic root of 197023423 is about 581.8878467815.

The spelling of 197023423 in words is "one hundred ninety-seven million, twenty-three thousand, four hundred twenty-three".