193120231 has 4 divisors (see below), whose sum is σ = 193222072. Its totient is φ = 193018392.

The previous prime is 193120223. The next prime is 193120247. The reversal of 193120231 is 132021391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 193120231 - 2³ = 193120223 is a prime.

It is a super-2 number, since 2×193120231² = 74590847242986722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193120271) 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, 48021 + ... + 51886.

It is an arithmetic number, because the mean of its divisors is an integer number (48305518).

Almost surely, 2^193120231 is an apocalyptic number.

193120231 is a deficient number, since it is larger than the sum of its proper divisors (101841).

193120231 is an equidigital number, since it uses as much as digits as its factorization.

193120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101840.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 193120231 is about 13896.7705241182. The cubic root of 193120231 is about 578.0196341155.

The spelling of 193120231 in words is "one hundred ninety-three million, one hundred twenty thousand, two hundred thirty-one".