23212021431 has 8 divisors (see below), whose sum is σ = 31084512880. Its totient is φ = 15407105472.

The previous prime is 23212021411. The next prime is 23212021433. The reversal of 23212021431 is 13412021232.

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

It is not a de Polignac number, because 23212021431 - 2¹⁰ = 23212020407 is a prime.

It is a super-2 number, since 2×23212021431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23212021398 and 23212021407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212021433) 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, 16893070 + ... + 16894443.

It is an arithmetic number, because the mean of its divisors is an integer number (3885564110).

Almost surely, 2^23212021431 is an apocalyptic number.

23212021431 is a deficient number, since it is larger than the sum of its proper divisors (7872491449).

23212021431 is a wasteful number, since it uses less digits than its factorization.

23212021431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33787745.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 23212021431 its reverse (13412021232), we get a palindrome (36624042663).

The spelling of 23212021431 in words is "twenty-three billion, two hundred twelve million, twenty-one thousand, four hundred thirty-one".