87197323 has 2 divisors, whose sum is σ = 87197324. Its totient is φ = 87197322.

The previous prime is 87197317. The next prime is 87197353. The reversal of 87197323 is 32379178.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87197323 is a prime.

It is not a weakly prime, because it can be changed into another prime (87197303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43598661 + 43598662.

It is an arithmetic number, because the mean of its divisors is an integer number (43598662).

Almost surely, 2^87197323 is an apocalyptic number.

87197323 is a deficient number, since it is larger than the sum of its proper divisors (1).

87197323 is an equidigital number, since it uses as much as digits as its factorization.

87197323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 87197323 is about 9337.9506852414. The cubic root of 87197323 is about 443.4395083040.

The spelling of 87197323 in words is "eighty-seven million, one hundred ninety-seven thousand, three hundred twenty-three".