1023133439 has 4 divisors (see below), whose sum is σ = 1026625656. Its totient is φ = 1019641224.

The previous prime is 1023133429. The next prime is 1023133469. The reversal of 1023133439 is 9343313201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9343313201 = 25981 ⋅359621.

It is a cyclic number.

It is not a de Polignac number, because 1023133439 - 2⁸ = 1023133183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023133429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745669 + ... + 1746254.

It is an arithmetic number, because the mean of its divisors is an integer number (256656414).

Almost surely, 2^1023133439 is an apocalyptic number.

1023133439 is a deficient number, since it is larger than the sum of its proper divisors (3492217).

1023133439 is an equidigital number, since it uses as much as digits as its factorization.

1023133439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492216.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 1023133439 is about 31986.4571185994. The cubic root of 1023133439 is about 1007.6524371637.

The spelling of 1023133439 in words is "one billion, twenty-three million, one hundred thirty-three thousand, four hundred thirty-nine".