1031323123 has 2 divisors, whose sum is σ = 1031323124. Its totient is φ = 1031323122.

The previous prime is 1031323121. The next prime is 1031323129. The reversal of 1031323123 is 3213231301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031323123 - 2¹ = 1031323121 is a prime.

Together with 1031323121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1031323123.

It is not a weakly prime, because it can be changed into another prime (1031323121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515661561 + 515661562.

It is an arithmetic number, because the mean of its divisors is an integer number (515661562).

Almost surely, 2^1031323123 is an apocalyptic number.

1031323123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031323123 is an equidigital number, since it uses as much as digits as its factorization.

1031323123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1031323123 is about 32114.2199500471. The cubic root of 1031323123 is about 1010.3338839927. Note that the first 3 decimals are identical.

Adding to 1031323123 its reverse (3213231301), we get a palindrome (4244554424).

The spelling of 1031323123 in words is "one billion, thirty-one million, three hundred twenty-three thousand, one hundred twenty-three".