87301381 has 2 divisors, whose sum is σ = 87301382. Its totient is φ = 87301380.

The previous prime is 87301373. The next prime is 87301391. The reversal of 87301381 is 18310378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81613156 + 5688225 = 9034^2 + 2385^2 .

It is a cyclic number.

It is not a de Polignac number, because 87301381 - 2³ = 87301373 is a prime.

It is a super-2 number, since 2×87301381² = 15243062249014322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87301391) 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 as a sum of consecutive naturals, namely, 43650690 + 43650691.

It is an arithmetic number, because the mean of its divisors is an integer number (43650691).

Almost surely, 2^87301381 is an apocalyptic number.

It is an amenable number.

87301381 is a deficient number, since it is larger than the sum of its proper divisors (1).

87301381 is an equidigital number, since it uses as much as digits as its factorization.

87301381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 87301381 is about 9343.5208032090. The cubic root of 87301381 is about 443.6158328502.

The spelling of 87301381 in words is "eighty-seven million, three hundred one thousand, three hundred eighty-one".