1023403513 has 8 divisors (see below), whose sum is σ = 1116866016. Its totient is φ = 930012000.

The previous prime is 1023403489. The next prime is 1023403543. The reversal of 1023403513 is 3153043201.

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-1023403513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023403543) 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 7 ways as a sum of consecutive naturals, for example, 15045 + ... + 47677.

It is an arithmetic number, because the mean of its divisors is an integer number (139608252).

Almost surely, 2^1023403513 is an apocalyptic number.

It is an amenable number.

1023403513 is a deficient number, since it is larger than the sum of its proper divisors (93462503).

1023403513 is a wasteful number, since it uses less digits than its factorization.

1023403513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35495.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1023403513 is about 31990.6785329727. The cubic root of 1023403513 is about 1007.7410918696.

Adding to 1023403513 its reverse (3153043201), we get a palindrome (4176446714).

The spelling of 1023403513 in words is "one billion, twenty-three million, four hundred three thousand, five hundred thirteen".