321420234200987 has 4 divisors (see below), whose sum is σ = 322014356630736. Its totient is φ = 320826111771240.

The previous prime is 321420234200977. The next prime is 321420234200993. The reversal of 321420234200987 is 789002432024123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321420234200987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321420234200927) 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, 297061214063 + ... + 297061215144.

It is an arithmetic number, because the mean of its divisors is an integer number (80503589157684).

Almost surely, 2^{321420234200987} is an apocalyptic number.

321420234200987 is a deficient number, since it is larger than the sum of its proper divisors (594122429749).

321420234200987 is an equidigital number, since it uses as much as digits as its factorization.

321420234200987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594122429748.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 321420234200987 in words is "three hundred twenty-one trillion, four hundred twenty billion, two hundred thirty-four million, two hundred thousand, nine hundred eighty-seven".