1265423371 has 2 divisors, whose sum is σ = 1265423372. Its totient is φ = 1265423370.

The previous prime is 1265423359. The next prime is 1265423387. The reversal of 1265423371 is 1733245621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1265423371 is a prime.

It is not a weakly prime, because it can be changed into another prime (1265421371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632711685 + 632711686.

It is an arithmetic number, because the mean of its divisors is an integer number (632711686).

Almost surely, 2^1265423371 is an apocalyptic number.

1265423371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265423371 is an equidigital number, since it uses as much as digits as its factorization.

1265423371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 1265423371 is about 35572.7897556545. The cubic root of 1265423371 is about 1081.6297328352.

Adding to 1265423371 its reverse (1733245621), we get a palindrome (2998668992).

The spelling of 1265423371 in words is "one billion, two hundred sixty-five million, four hundred twenty-three thousand, three hundred seventy-one".