1321046123 has 2 divisors, whose sum is σ = 1321046124. Its totient is φ = 1321046122.

The previous prime is 1321046087. The next prime is 1321046143. The reversal of 1321046123 is 3216401231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321046123 - 2¹⁸ = 1320783979 is a prime.

It is a super-2 number, since 2×1321046123² = 3490325718186662258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1321046143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660523061 + 660523062.

It is an arithmetic number, because the mean of its divisors is an integer number (660523062).

Almost surely, 2^1321046123 is an apocalyptic number.

1321046123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321046123 is an equidigital number, since it uses as much as digits as its factorization.

1321046123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1321046123 is about 36346.1981918329. The cubic root of 1321046123 is about 1097.2510209506.

Adding to 1321046123 its reverse (3216401231), we get a palindrome (4537447354).

The spelling of 1321046123 in words is "one billion, three hundred twenty-one million, forty-six thousand, one hundred twenty-three".