12030321131 has 4 divisors (see below), whose sum is σ = 12118133832. Its totient is φ = 11942508432.

The previous prime is 12030321101. The next prime is 12030321137. The reversal of 12030321131 is 13112303021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13112303021 = 1201 ⋅10917821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12030321131 is a prime.

It is a super-2 number, since 2×12030321131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12030321137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43906145 + ... + 43906418.

It is an arithmetic number, because the mean of its divisors is an integer number (3029533458).

Almost surely, 2^12030321131 is an apocalyptic number.

12030321131 is a deficient number, since it is larger than the sum of its proper divisors (87812701).

12030321131 is an equidigital number, since it uses as much as digits as its factorization.

12030321131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87812700.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12030321131 its reverse (13112303021), we get a palindrome (25142624152).

The spelling of 12030321131 in words is "twelve billion, thirty million, three hundred twenty-one thousand, one hundred thirty-one".