23403342121 has 4 divisors (see below), whose sum is σ = 23407121232. Its totient is φ = 23399563012.

The previous prime is 23403342101. The next prime is 23403342133. The reversal of 23403342121 is 12124330432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23403342121 - 2⁷ = 23403341993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23403342101) 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, 1880251 + ... + 1892656.

It is an arithmetic number, because the mean of its divisors is an integer number (5851780308).

Almost surely, 2^23403342121 is an apocalyptic number.

It is an amenable number.

23403342121 is a deficient number, since it is larger than the sum of its proper divisors (3779111).

23403342121 is an equidigital number, since it uses as much as digits as its factorization.

23403342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779110.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23403342121 its reverse (12124330432), we get a palindrome (35527672553).

The spelling of 23403342121 in words is "twenty-three billion, four hundred three million, three hundred forty-two thousand, one hundred twenty-one".