187321361 has 16 divisors (see below), whose sum is σ = 206912640. Its totient is φ = 168791040.

The previous prime is 187321349. The next prime is 187321397. The reversal of 187321361 is 163123781.

It is a cyclic number.

It is not a de Polignac number, because 187321361 - 2⁶ = 187321297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187321331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83231 + ... + 85451.

It is an arithmetic number, because the mean of its divisors is an integer number (12932040).

Almost surely, 2^187321361 is an apocalyptic number.

It is an amenable number.

187321361 is a deficient number, since it is larger than the sum of its proper divisors (19591279).

187321361 is a wasteful number, since it uses less digits than its factorization.

187321361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its digits is 6048, while the sum is 32.

The square root of 187321361 is about 13686.5394092152. The cubic root of 187321361 is about 572.1752940907.

The spelling of 187321361 in words is "one hundred eighty-seven million, three hundred twenty-one thousand, three hundred sixty-one".