1231320030003 has 24 divisors (see below), whose sum is σ = 2067107078400. Its totient is φ = 691685825904.

The previous prime is 1231320029999. The next prime is 1231320030019. The reversal of 1231320030003 is 3000300231321.

1231320030003 is a `hidden beast` number, since 12 + 31 + 320 + 0 + 300 + 0 + 3 = 666.

It is not a de Polignac number, because 1231320030003 - 2² = 1231320029999 is a prime.

It is a super-2 number, since 2×1231320030003² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231320030053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165629863 + ... + 165637296.

It is an arithmetic number, because the mean of its divisors is an integer number (86129461600).

Almost surely, 2^{1231320030003} is an apocalyptic number.

1231320030003 is a deficient number, since it is larger than the sum of its proper divisors (835787048397).

1231320030003 is a wasteful number, since it uses less digits than its factorization.

1231320030003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331267231 (or 331267228 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 1231320030003 its reverse (3000300231321), we get a palindrome (4231620261324).

The spelling of 1231320030003 in words is "one trillion, two hundred thirty-one billion, three hundred twenty million, thirty thousand, three".