1231224253451 has 2 divisors, whose sum is σ = 1231224253452. Its totient is φ = 1231224253450.

The previous prime is 1231224253409. The next prime is 1231224253471. The reversal of 1231224253451 is 1543524221321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231224253451 - 2¹⁸ = 1231223991307 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231224253471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615612126725 + 615612126726.

It is an arithmetic number, because the mean of its divisors is an integer number (615612126726).

Almost surely, 2^{1231224253451} is an apocalyptic number.

1231224253451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231224253451 is an equidigital number, since it uses as much as digits as its factorization.

1231224253451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

Adding to 1231224253451 its reverse (1543524221321), we get a palindrome (2774748474772).

The spelling of 1231224253451 in words is "one trillion, two hundred thirty-one billion, two hundred twenty-four million, two hundred fifty-three thousand, four hundred fifty-one".