12040320031 has 2 divisors, whose sum is σ = 12040320032. Its totient is φ = 12040320030.

The previous prime is 12040320029. The next prime is 12040320037. The reversal of 12040320031 is 13002304021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12040320031 - 2¹ = 12040320029 is a prime.

It is a super-2 number, since 2×12040320031² (a number of 21 digits) contains 22 as substring.

Together with 12040320029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12040319987 and 12040320014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12040320037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6020160015 + 6020160016.

It is an arithmetic number, because the mean of its divisors is an integer number (6020160016).

Almost surely, 2^12040320031 is an apocalyptic number.

12040320031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12040320031 is an equidigital number, since it uses as much as digits as its factorization.

12040320031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12040320031 its reverse (13002304021), we get a palindrome (25042624052).

The spelling of 12040320031 in words is "twelve billion, forty million, three hundred twenty thousand, thirty-one".