197023723 has 4 divisors (see below), whose sum is σ = 212179408. Its totient is φ = 181868040.

The previous prime is 197023691. The next prime is 197023733. The reversal of 197023723 is 327320791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327320791 = 7 ⋅46760113.

It is a cyclic number.

It is not a de Polignac number, because 197023723 - 2⁵ = 197023691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197023733) 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, 7577823 + ... + 7577848.

It is an arithmetic number, because the mean of its divisors is an integer number (53044852).

Almost surely, 2^197023723 is an apocalyptic number.

197023723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

197023723 is a deficient number, since it is larger than the sum of its proper divisors (15155685).

197023723 is a wasteful number, since it uses less digits than its factorization.

197023723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15155684.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 197023723 is about 14036.5139190612. The cubic root of 197023723 is about 581.8881421207. Note that the first 3 decimals are identical.

The spelling of 197023723 in words is "one hundred ninety-seven million, twenty-three thousand, seven hundred twenty-three".