1297500023 has 2 divisors, whose sum is σ = 1297500024. Its totient is φ = 1297500022.

The previous prime is 1297499969. The next prime is 1297500041. The reversal of 1297500023 is 3200057921.

It is a strong prime.

It is an emirp because it is prime and its reverse (3200057921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297500023 - 2¹⁶ = 1297434487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297500623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648750011 + 648750012.

It is an arithmetic number, because the mean of its divisors is an integer number (648750012).

Almost surely, 2^1297500023 is an apocalyptic number.

1297500023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297500023 is an equidigital number, since it uses as much as digits as its factorization.

1297500023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1297500023 is about 36020.8276279155. The cubic root of 1297500023 is about 1090.6928297351.

Adding to 1297500023 its reverse (3200057921), we get a palindrome (4497557944).

The spelling of 1297500023 in words is "one billion, two hundred ninety-seven million, five hundred thousand, twenty-three".