1023423239 has 8 divisors (see below), whose sum is σ = 1140657840. Its totient is φ = 912525696.

The previous prime is 1023423197. The next prime is 1023423287. The reversal of 1023423239 is 9323243201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023423239 is a prime.

It is a super-2 number, since 2×1023423239² = 2094790252250502242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023420239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583924 + ... + 1584569.

It is an arithmetic number, because the mean of its divisors is an integer number (142582230).

Almost surely, 2^1023423239 is an apocalyptic number.

1023423239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1023423239 is a deficient number, since it is larger than the sum of its proper divisors (117234601).

1023423239 is a wasteful number, since it uses less digits than its factorization.

1023423239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168529.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 1023423239 is about 31990.9868400461. The cubic root of 1023423239 is about 1007.7475665308.

The spelling of 1023423239 in words is "one billion, twenty-three million, four hundred twenty-three thousand, two hundred thirty-nine".