193481087 has 2 divisors, whose sum is σ = 193481088. Its totient is φ = 193481086.

The previous prime is 193481039. The next prime is 193481089. The reversal of 193481087 is 780184391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193481087 - 2²⁶ = 126372223 is a prime.

Together with 193481089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193481089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96740543 + 96740544.

It is an arithmetic number, because the mean of its divisors is an integer number (96740544).

Almost surely, 2^193481087 is an apocalyptic number.

193481087 is a deficient number, since it is larger than the sum of its proper divisors (1).

193481087 is an equidigital number, since it uses as much as digits as its factorization.

193481087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 193481087 is about 13909.7479128847. The cubic root of 193481087 is about 578.3794308271.

The spelling of 193481087 in words is "one hundred ninety-three million, four hundred eighty-one thousand, eighty-seven".