1023123259 has 2 divisors, whose sum is σ = 1023123260. Its totient is φ = 1023123258.

The previous prime is 1023123253. The next prime is 1023123281. The reversal of 1023123259 is 9523213201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023123259 - 2¹⁹ = 1022598971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023123253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511561629 + 511561630.

It is an arithmetic number, because the mean of its divisors is an integer number (511561630).

Almost surely, 2^1023123259 is an apocalyptic number.

1023123259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023123259 is an equidigital number, since it uses as much as digits as its factorization.

1023123259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1023123259 is about 31986.2979883575. The cubic root of 1023123259 is about 1007.6490951637.

The spelling of 1023123259 in words is "one billion, twenty-three million, one hundred twenty-three thousand, two hundred fifty-nine".