23126731 has 2 divisors, whose sum is σ = 23126732. Its totient is φ = 23126730.

The previous prime is 23126729. The next prime is 23126767. The reversal of 23126731 is 13762132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23126731 - 2¹ = 23126729 is a prime.

It is a super-2 number, since 2×23126731² = 1069691373492722, which contains 22 as substring.

Together with 23126729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23126696 and 23126705.

It is not a weakly prime, because it can be changed into another prime (23126711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11563365 + 11563366.

It is an arithmetic number, because the mean of its divisors is an integer number (11563366).

Almost surely, 2^23126731 is an apocalyptic number.

23126731 is a deficient number, since it is larger than the sum of its proper divisors (1).

23126731 is an equidigital number, since it uses as much as digits as its factorization.

23126731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 25.

The square root of 23126731 is about 4809.0259928597. The cubic root of 23126731 is about 284.9080692519.

Adding to 23126731 its reverse (13762132), we get a palindrome (36888863).

It can be divided in two parts, 231 and 26731, that added together give a palindrome (26962).

The spelling of 23126731 in words is "twenty-three million, one hundred twenty-six thousand, seven hundred thirty-one".