87880431 has 8 divisors (see below), whose sum is σ = 118029744. Its totient is φ = 58159040.

The previous prime is 87880423. The next prime is 87880451. The reversal of 87880431 is 13408878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87880431 - 2³ = 87880423 is a prime.

It is a super-2 number, since 2×87880431² = 15445940305491522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87880431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87880421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106500 + ... + 107321.

It is an arithmetic number, because the mean of its divisors is an integer number (14753718).

Almost surely, 2^87880431 is an apocalyptic number.

87880431 is a deficient number, since it is larger than the sum of its proper divisors (30149313).

87880431 is a wasteful number, since it uses less digits than its factorization.

87880431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213961.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 87880431 is about 9374.4563042344. The cubic root of 87880431 is about 444.5944729588.

The spelling of 87880431 in words is "eighty-seven million, eight hundred eighty thousand, four hundred thirty-one".