87311368 has 8 divisors (see below), whose sum is σ = 163708830. Its totient is φ = 43655680.

The previous prime is 87311359. The next prime is 87311377. The reversal of 87311368 is 86311378.

It is an interprime number because it is at equal distance from previous prime (87311359) and next prime (87311377).

It can be written as a sum of positive squares in only one way, i.e., 60871204 + 26440164 = 7802^2 + 5142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5456953 + ... + 5456968.

Almost surely, 2^87311368 is an apocalyptic number.

It is an amenable number.

87311368 is a deficient number, since it is larger than the sum of its proper divisors (76397462).

87311368 is a wasteful number, since it uses less digits than its factorization.

87311368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10913927 (or 10913923 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 87311368 is about 9344.0552224396. The cubic root of 87311368 is about 443.6327482848.

It can be divided in two parts, 873113 and 68, that added together give a triangular number (873181 = T₁₃₂₁).

The spelling of 87311368 in words is "eighty-seven million, three hundred eleven thousand, three hundred sixty-eight".