1203234230505 has 32 divisors (see below), whose sum is σ = 2031791063040. Its totient is φ = 606362535360.

The previous prime is 1203234230489. The next prime is 1203234230509. The reversal of 1203234230505 is 5050324323021.

It is not a de Polignac number, because 1203234230505 - 2⁴ = 1203234230489 is a prime.

It is a super-2 number, since 2×1203234230505² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1203234230509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5402431 + ... + 5620740.

It is an arithmetic number, because the mean of its divisors is an integer number (63493470720).

Almost surely, 2^{1203234230505} is an apocalyptic number.

1203234230505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1203234230505 is a deficient number, since it is larger than the sum of its proper divisors (828556832535).

1203234230505 is a wasteful number, since it uses less digits than its factorization.

1203234230505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023581.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 1203234230505 its reverse (5050324323021), we get a palindrome (6253558553526).

The spelling of 1203234230505 in words is "one trillion, two hundred three billion, two hundred thirty-four million, two hundred thirty thousand, five hundred five".