23431440007 has 2 divisors, whose sum is σ = 23431440008. Its totient is φ = 23431440006.

The previous prime is 23431439971. The next prime is 23431440059. The reversal of 23431440007 is 70004413432.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23431440007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23431449007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715720003 + 11715720004.

It is an arithmetic number, because the mean of its divisors is an integer number (11715720004).

Almost surely, 2^23431440007 is an apocalyptic number.

23431440007 is a deficient number, since it is larger than the sum of its proper divisors (1).

23431440007 is an equidigital number, since it uses as much as digits as its factorization.

23431440007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 23431440007 its reverse (70004413432), we get a palindrome (93435853439).

The spelling of 23431440007 in words is "twenty-three billion, four hundred thirty-one million, four hundred forty thousand, seven".