23163431 has 8 divisors (see below), whose sum is σ = 24019680. Its totient is φ = 22311072.

The previous prime is 23163419. The next prime is 23163463. The reversal of 23163431 is 13436132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23163431 is a prime.

It is a super-2 number, since 2×23163431² = 1073089071383522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23163397 and 23163406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23163031) 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, 17126 + ... + 18428.

It is an arithmetic number, because the mean of its divisors is an integer number (3002460).

Almost surely, 2^23163431 is an apocalyptic number.

23163431 is a deficient number, since it is larger than the sum of its proper divisors (856249).

23163431 is a wasteful number, since it uses less digits than its factorization.

23163431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945.

The product of its digits is 1296, while the sum is 23.

The square root of 23163431 is about 4812.8402217402. The cubic root of 23163431 is about 285.0586972566.

Adding to 23163431 its reverse (13436132), we get a palindrome (36599563).

The spelling of 23163431 in words is "twenty-three million, one hundred sixty-three thousand, four hundred thirty-one".