1251253323 has 12 divisors (see below), whose sum is σ = 1814569848. Its totient is φ = 830844000.

The previous prime is 1251253321. The next prime is 1251253327. The reversal of 1251253323 is 3233521521.

It is a happy number.

1251253323 is a `hidden beast` number, since 125 + 1 + 2 + 533 + 2 + 3 = 666.

It is not a de Polignac number, because 1251253323 - 2¹ = 1251253321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1251253321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274690 + ... + 279207.

It is an arithmetic number, because the mean of its divisors is an integer number (151214154).

Almost surely, 2^1251253323 is an apocalyptic number.

1251253323 is a deficient number, since it is larger than the sum of its proper divisors (563316525).

1251253323 is a wasteful number, since it uses less digits than its factorization.

1251253323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554154 (or 554151 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 1251253323 is about 35373.0592824539. The cubic root of 1251253323 is about 1077.5772517614.

Adding to 1251253323 its reverse (3233521521), we get a palindrome (4484774844).

The spelling of 1251253323 in words is "one billion, two hundred fifty-one million, two hundred fifty-three thousand, three hundred twenty-three".