23211421311451 has 4 divisors (see below), whose sum is σ = 24576799035672. Its totient is φ = 21846043587232.

The previous prime is 23211421311431. The next prime is 23211421311473. The reversal of 23211421311451 is 15411312411232.

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-23211421311451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211421311431) 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, 682688862085 + ... + 682688862118.

It is an arithmetic number, because the mean of its divisors is an integer number (6144199758918).

Almost surely, 2^{23211421311451} is an apocalyptic number.

23211421311451 is a deficient number, since it is larger than the sum of its proper divisors (1365377724221).

23211421311451 is a wasteful number, since it uses less digits than its factorization.

23211421311451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365377724220.

The product of its digits is 5760, while the sum is 31.

Adding to 23211421311451 its reverse (15411312411232), we get a palindrome (38622733722683).

The spelling of 23211421311451 in words is "twenty-three trillion, two hundred eleven billion, four hundred twenty-one million, three hundred eleven thousand, four hundred fifty-one".