1023113239 has 4 divisors (see below), whose sum is σ = 1023988120. Its totient is φ = 1022238360.

The previous prime is 1023113213. The next prime is 1023113251. The reversal of 1023113239 is 9323113201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9323113201 = 191 ⋅48812111.

It is a cyclic number.

It is not a de Polignac number, because 1023113239 - 2¹¹ = 1023111191 is a prime.

It is a super-2 number, since 2×1023113239² = 2093521399634142242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023113269) 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 in 3 ways as a sum of consecutive naturals, for example, 435684 + ... + 438025.

It is an arithmetic number, because the mean of its divisors is an integer number (255997030).

Almost surely, 2^1023113239 is an apocalyptic number.

1023113239 is a deficient number, since it is larger than the sum of its proper divisors (874881).

1023113239 is an equidigital number, since it uses as much as digits as its factorization.

1023113239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874880.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1023113239 is about 31986.1413584071. The cubic root of 1023113239 is about 1007.6458056686.

The spelling of 1023113239 in words is "one billion, twenty-three million, one hundred thirteen thousand, two hundred thirty-nine".