1023440423 has 2 divisors, whose sum is σ = 1023440424. Its totient is φ = 1023440422.

The previous prime is 1023440419. The next prime is 1023440507. The reversal of 1023440423 is 3240443201.

It is a weak prime.

It is an emirp because it is prime and its reverse (3240443201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023440423 - 2² = 1023440419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023442423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511720211 + 511720212.

It is an arithmetic number, because the mean of its divisors is an integer number (511720212).

Almost surely, 2^1023440423 is an apocalyptic number.

1023440423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023440423 is an equidigital number, since it uses as much as digits as its factorization.

1023440423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1023440423 is about 31991.2554145660. The cubic root of 1023440423 is about 1007.7532067641.

Adding to 1023440423 its reverse (3240443201), we get a palindrome (4263883624).

The spelling of 1023440423 in words is "one billion, twenty-three million, four hundred forty thousand, four hundred twenty-three".