23404217431 has 16 divisors (see below), whose sum is σ = 27325854720. Its totient is φ = 19627408800.

The previous prime is 23404217401. The next prime is 23404217437. The reversal of 23404217431 is 13471240432.

It is a cyclic number.

It is not a de Polignac number, because 23404217431 - 2⁵ = 23404217399 is a prime.

It is a super-2 number, since 2×23404217431² (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 = 23404217393 and 23404217402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23404217437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154281 + ... + 1174381.

It is an arithmetic number, because the mean of its divisors is an integer number (1707865920).

Almost surely, 2^23404217431 is an apocalyptic number.

23404217431 is a deficient number, since it is larger than the sum of its proper divisors (3921637289).

23404217431 is a wasteful number, since it uses less digits than its factorization.

23404217431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23694.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 23404217431 its reverse (13471240432), we get a palindrome (36875457863).

The spelling of 23404217431 in words is "twenty-three billion, four hundred four million, two hundred seventeen thousand, four hundred thirty-one".