1023401243 has 8 divisors (see below), whose sum is σ = 1026736080. Its totient is φ = 1020072960.

The previous prime is 1023401231. The next prime is 1023401257. The reversal of 1023401243 is 3421043201.

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-1023401243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023404243) 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, 650648 + ... + 652218.

It is an arithmetic number, because the mean of its divisors is an integer number (128342010).

Almost surely, 2^1023401243 is an apocalyptic number.

1023401243 is a deficient number, since it is larger than the sum of its proper divisors (3334837).

1023401243 is a wasteful number, since it uses less digits than its factorization.

1023401243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1023401243 is about 31990.6430538681. The cubic root of 1023401243 is about 1007.7403467826.

Adding to 1023401243 its reverse (3421043201), we get a palindrome (4444444444).

The spelling of 1023401243 in words is "one billion, twenty-three million, four hundred one thousand, two hundred forty-three".