12132312031 has 4 divisors (see below), whose sum is σ = 13865499472. Its totient is φ = 10399124592.

The previous prime is 12132312029. The next prime is 12132312047. The reversal of 12132312031 is 13021323121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12132312031 - 2¹ = 12132312029 is a prime.

It is a super-2 number, since 2×12132312031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132310031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866593710 + ... + 866593723.

It is an arithmetic number, because the mean of its divisors is an integer number (3466374868).

Almost surely, 2^12132312031 is an apocalyptic number.

12132312031 is a deficient number, since it is larger than the sum of its proper divisors (1733187441).

12132312031 is an equidigital number, since it uses as much as digits as its factorization.

12132312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733187440.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12132312031 its reverse (13021323121), we get a palindrome (25153635152).

The spelling of 12132312031 in words is "twelve billion, one hundred thirty-two million, three hundred twelve thousand, thirty-one".