1031231423 has 2 divisors, whose sum is σ = 1031231424. Its totient is φ = 1031231422.

The previous prime is 1031231419. The next prime is 1031231437. The reversal of 1031231423 is 3241321301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031231423 - 2² = 1031231419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031231395 and 1031231404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031231723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515615711 + 515615712.

It is an arithmetic number, because the mean of its divisors is an integer number (515615712).

Almost surely, 2^1031231423 is an apocalyptic number.

1031231423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031231423 is an equidigital number, since it uses as much as digits as its factorization.

1031231423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1031231423 is about 32112.7922018625. The cubic root of 1031231423 is about 1010.3039385239.

Adding to 1031231423 its reverse (3241321301), we get a palindrome (4272552724).

The spelling of 1031231423 in words is "one billion, thirty-one million, two hundred thirty-one thousand, four hundred twenty-three".