87870311 has 2 divisors, whose sum is σ = 87870312. Its totient is φ = 87870310.

The previous prime is 87870283. The next prime is 87870347. The reversal of 87870311 is 11307878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87870311 - 2⁶ = 87870247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87870361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43935155 + 43935156.

It is an arithmetic number, because the mean of its divisors is an integer number (43935156).

Almost surely, 2^87870311 is an apocalyptic number.

87870311 is a deficient number, since it is larger than the sum of its proper divisors (1).

87870311 is an equidigital number, since it uses as much as digits as its factorization.

87870311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 87870311 is about 9373.9165240576. The cubic root of 87870311 is about 444.5774063274.

The spelling of 87870311 in words is "eighty-seven million, eight hundred seventy thousand, three hundred eleven".