1321422887 has 8 divisors (see below), whose sum is σ = 1451448960. Its totient is φ = 1197444600.

The previous prime is 1321422877. The next prime is 1321422889. The reversal of 1321422887 is 7882241231.

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

It is not a de Polignac number, because 1321422887 - 2²⁸ = 1052987431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321422887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321422889) 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, 1511489 + ... + 1512362.

It is an arithmetic number, because the mean of its divisors is an integer number (181431120).

Almost surely, 2^1321422887 is an apocalyptic number.

1321422887 is a deficient number, since it is larger than the sum of its proper divisors (130026073).

1321422887 is a wasteful number, since it uses less digits than its factorization.

1321422887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023893.

The product of its digits is 43008, while the sum is 38.

The square root of 1321422887 is about 36351.3808128385. The cubic root of 1321422887 is about 1097.3553234882.

The spelling of 1321422887 in words is "one billion, three hundred twenty-one million, four hundred twenty-two thousand, eight hundred eighty-seven".