187850231 has 2 divisors, whose sum is σ = 187850232. Its totient is φ = 187850230.

The previous prime is 187850209. The next prime is 187850237. The reversal of 187850231 is 132058781.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-187850231 is a prime.

It is a super-2 number, since 2×187850231² = 70575418573506722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 187850191 and 187850200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187850237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93925115 + 93925116.

It is an arithmetic number, because the mean of its divisors is an integer number (93925116).

Almost surely, 2^187850231 is an apocalyptic number.

187850231 is a deficient number, since it is larger than the sum of its proper divisors (1).

187850231 is an equidigital number, since it uses as much as digits as its factorization.

187850231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 187850231 is about 13705.8465991707. The cubic root of 187850231 is about 572.7132679879.

The spelling of 187850231 in words is "one hundred eighty-seven million, eight hundred fifty thousand, two hundred thirty-one".