87174131 has 4 divisors (see below), whose sum is σ = 95099064. Its totient is φ = 79249200.

The previous prime is 87174127. The next prime is 87174133. The reversal of 87174131 is 13147178.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87174131 - 2² = 87174127 is a prime.

It is a super-2 number, since 2×87174131² = 15198658231210322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87174133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3962450 + ... + 3962471.

It is an arithmetic number, because the mean of its divisors is an integer number (23774766).

Almost surely, 2^87174131 is an apocalyptic number.

87174131 is a deficient number, since it is larger than the sum of its proper divisors (7924933).

87174131 is a wasteful number, since it uses less digits than its factorization.

87174131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7924932.

The product of its digits is 4704, while the sum is 32.

The square root of 87174131 is about 9336.7087884329. The cubic root of 87174131 is about 443.4001907323.

The spelling of 87174131 in words is "eighty-seven million, one hundred seventy-four thousand, one hundred thirty-one".