1213451423 has 2 divisors, whose sum is σ = 1213451424. Its totient is φ = 1213451422.

The previous prime is 1213451417. The next prime is 1213451429. The reversal of 1213451423 is 3241543121.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1213451417) and next prime (1213451429).

It is a cyclic number.

It is not a de Polignac number, because 1213451423 - 2⁸ = 1213451167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213451392 and 1213451401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213451429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606725711 + 606725712.

It is an arithmetic number, because the mean of its divisors is an integer number (606725712).

Almost surely, 2^1213451423 is an apocalyptic number.

1213451423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213451423 is an equidigital number, since it uses as much as digits as its factorization.

1213451423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 1213451423 is about 34834.6296521149. The cubic root of 1213451423 is about 1066.6144551375.

Adding to 1213451423 its reverse (3241543121), we get a palindrome (4454994544).

The spelling of 1213451423 in words is "one billion, two hundred thirteen million, four hundred fifty-one thousand, four hundred twenty-three".