61323187 has 2 divisors, whose sum is σ = 61323188. Its totient is φ = 61323186.

The previous prime is 61323181. The next prime is 61323191. The reversal of 61323187 is 78132316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61323187 - 2²³ = 52934579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61323181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30661593 + 30661594.

It is an arithmetic number, because the mean of its divisors is an integer number (30661594).

Almost surely, 2^61323187 is an apocalyptic number.

61323187 is a deficient number, since it is larger than the sum of its proper divisors (1).

61323187 is an equidigital number, since it uses as much as digits as its factorization.

61323187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 61323187 is about 7830.9122712491. The cubic root of 61323187 is about 394.3436989079.

The spelling of 61323187 in words is "sixty-one million, three hundred twenty-three thousand, one hundred eighty-seven".