1400216321 has 8 divisors (see below), whose sum is σ = 1602202944. Its totient is φ = 1198718640.

The previous prime is 1400216291. The next prime is 1400216327. The reversal of 1400216321 is 1236120041.

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

It is not a de Polignac number, because 1400216321 - 2¹⁴ = 1400199937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1400216293 and 1400216302.

It is not an unprimeable number, because it can be changed into a prime (1400216327) 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, 116075 + ... + 127568.

It is an arithmetic number, because the mean of its divisors is an integer number (200275368).

Almost surely, 2^1400216321 is an apocalyptic number.

It is an amenable number.

1400216321 is a deficient number, since it is larger than the sum of its proper divisors (201986623).

1400216321 is an equidigital number, since it uses as much as digits as its factorization.

1400216321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244471.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1400216321 is about 37419.4644670391. The cubic root of 1400216321 is about 1118.7465571880.

Adding to 1400216321 its reverse (1236120041), we get a palindrome (2636336362).

The spelling of 1400216321 in words is "one billion, four hundred million, two hundred sixteen thousand, three hundred twenty-one".