12641323031 has 4 divisors (see below), whose sum is σ = 12641916864. Its totient is φ = 12640729200.

The previous prime is 12641323007. The next prime is 12641323033. The reversal of 12641323031 is 13032314621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13032314621 = 43487 ⋅299683.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12641323031 is a prime.

It is a super-2 number, since 2×12641323031² (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 (12641323033) 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, 263750 + ... + 307971.

It is an arithmetic number, because the mean of its divisors is an integer number (3160479216).

Almost surely, 2^12641323031 is an apocalyptic number.

12641323031 is a deficient number, since it is larger than the sum of its proper divisors (593833).

12641323031 is an equidigital number, since it uses as much as digits as its factorization.

12641323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593832.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12641323031 its reverse (13032314621), we get a palindrome (25673637652).

The spelling of 12641323031 in words is "twelve billion, six hundred forty-one million, three hundred twenty-three thousand, thirty-one".