2111320451 has 8 divisors (see below), whose sum is σ = 2228163600. Its totient is φ = 1995049440.

The previous prime is 2111320447. The next prime is 2111320481. The reversal of 2111320451 is 1540231112.

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 2111320451 - 2² = 2111320447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111320411) 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, 135440 + ... + 150221.

It is an arithmetic number, because the mean of its divisors is an integer number (278520450).

Almost surely, 2^2111320451 is an apocalyptic number.

2111320451 is a deficient number, since it is larger than the sum of its proper divisors (116843149).

2111320451 is a wasteful number, since it uses less digits than its factorization.

2111320451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286069.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2111320451 is about 45949.1071839269. The cubic root of 2111320451 is about 1282.8761113820.

Adding to 2111320451 its reverse (1540231112), we get a palindrome (3651551563).

The spelling of 2111320451 in words is "two billion, one hundred eleven million, three hundred twenty thousand, four hundred fifty-one".