23043452421 has 16 divisors (see below), whose sum is σ = 33534365760. Its totient is φ = 13958805120.

The previous prime is 23043452401. The next prime is 23043452429. The reversal of 23043452421 is 12425434032.

It is not a de Polignac number, because 23043452421 - 2¹⁷ = 23043321349 is a prime.

It is a super-2 number, since 2×23043452421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23043452429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105120 + ... + 239033.

It is an arithmetic number, because the mean of its divisors is an integer number (2095897860).

Almost surely, 2^23043452421 is an apocalyptic number.

It is an amenable number.

23043452421 is a deficient number, since it is larger than the sum of its proper divisors (10490913339).

23043452421 is a wasteful number, since it uses less digits than its factorization.

23043452421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346196.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 23043452421 its reverse (12425434032), we get a palindrome (35468886453).

The spelling of 23043452421 in words is "twenty-three billion, forty-three million, four hundred fifty-two thousand, four hundred twenty-one".