1331231423 has 2 divisors, whose sum is σ = 1331231424. Its totient is φ = 1331231422.

The previous prime is 1331231387. The next prime is 1331231437. The reversal of 1331231423 is 3241321331.

It is a strong prime.

It is an emirp because it is prime and its reverse (3241321331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1331231423 - 2²⁸ = 1062795967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331231483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665615711 + 665615712.

It is an arithmetic number, because the mean of its divisors is an integer number (665615712).

Almost surely, 2^1331231423 is an apocalyptic number.

1331231423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331231423 is an equidigital number, since it uses as much as digits as its factorization.

1331231423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

The square root of 1331231423 is about 36486.0442224147. The cubic root of 1331231423 is about 1100.0637491980.

Adding to 1331231423 its reverse (3241321331), we get a palindrome (4572552754).

The spelling of 1331231423 in words is "one billion, three hundred thirty-one million, two hundred thirty-one thousand, four hundred twenty-three".