12503423605031 has 4 divisors (see below), whose sum is σ = 12531648037992. Its totient is φ = 12475199172072.

The previous prime is 12503423605021. The next prime is 12503423605033. The reversal of 12503423605031 is 13050632430521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12503423605031 is a prime.

It is a super-2 number, since 2×12503423605031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12503423604982 and 12503423605000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12503423605033) 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, 14112215816 + ... + 14112216701.

It is an arithmetic number, because the mean of its divisors is an integer number (3132912009498).

Almost surely, 2^{12503423605031} is an apocalyptic number.

12503423605031 is a deficient number, since it is larger than the sum of its proper divisors (28224432961).

12503423605031 is an equidigital number, since it uses as much as digits as its factorization.

12503423605031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28224432960.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 12503423605031 in words is "twelve trillion, five hundred three billion, four hundred twenty-three million, six hundred five thousand, thirty-one".