1023313421403 has 32 divisors (see below), whose sum is σ = 1865870630400. Its totient is φ = 539769715488.

The previous prime is 1023313421357. The next prime is 1023313421437. The reversal of 1023313421403 is 3041243133201.

It is a happy number.

1023313421403 is a `hidden beast` number, since 1 + 0 + 233 + 1 + 3 + 4 + 21 + 403 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1023313421403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1023313421453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208242033 + ... + 208246946.

It is an arithmetic number, because the mean of its divisors is an integer number (58308457200).

Almost surely, 2^{1023313421403} is an apocalyptic number.

1023313421403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1023313421403 is a deficient number, since it is larger than the sum of its proper divisors (842557208997).

1023313421403 is a wasteful number, since it uses less digits than its factorization.

1023313421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416489008 (or 416489002 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 1023313421403 its reverse (3041243133201), we get a palindrome (4064556554604).

The spelling of 1023313421403 in words is "one trillion, twenty-three billion, three hundred thirteen million, four hundred twenty-one thousand, four hundred three".