194290231 has 2 divisors, whose sum is σ = 194290232. Its totient is φ = 194290230.

The previous prime is 194290207. The next prime is 194290259. The reversal of 194290231 is 132092491.

194290231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194290231 is a prime.

It is a super-2 number, since 2×194290231² = 75497387724066722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 194290193 and 194290202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194290531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97145115 + 97145116.

It is an arithmetic number, because the mean of its divisors is an integer number (97145116).

Almost surely, 2^194290231 is an apocalyptic number.

194290231 is a deficient number, since it is larger than the sum of its proper divisors (1).

194290231 is an equidigital number, since it uses as much as digits as its factorization.

194290231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 194290231 is about 13938.8030691304. The cubic root of 194290231 is about 579.1845764855.

The spelling of 194290231 in words is "one hundred ninety-four million, two hundred ninety thousand, two hundred thirty-one".