1231451324407 has 2 divisors, whose sum is σ = 1231451324408. Its totient is φ = 1231451324406.

The previous prime is 1231451324353. The next prime is 1231451324443. The reversal of 1231451324407 is 7044231541321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231451324407 - 2²³ = 1231442935799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231451324447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615725662203 + 615725662204.

It is an arithmetic number, because the mean of its divisors is an integer number (615725662204).

Almost surely, 2^{1231451324407} is an apocalyptic number.

1231451324407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231451324407 is an equidigital number, since it uses as much as digits as its factorization.

1231451324407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 1231451324407 its reverse (7044231541321), we get a palindrome (8275682865728).

The spelling of 1231451324407 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-one million, three hundred twenty-four thousand, four hundred seven".