1023123911 has 2 divisors, whose sum is σ = 1023123912. Its totient is φ = 1023123910.

The previous prime is 1023123859. The next prime is 1023123919. The reversal of 1023123911 is 1193213201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1023123911 - 2¹⁸ = 1022861767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023123919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511561955 + 511561956.

It is an arithmetic number, because the mean of its divisors is an integer number (511561956).

Almost surely, 2^1023123911 is an apocalyptic number.

1023123911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023123911 is an equidigital number, since it uses as much as digits as its factorization.

1023123911 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 23.

The square root of 1023123911 is about 31986.3081802199. The cubic root of 1023123911 is about 1007.6493092100.

The spelling of 1023123911 in words is "one billion, twenty-three million, one hundred twenty-three thousand, nine hundred eleven".