13442372731 has 2 divisors, whose sum is σ = 13442372732. Its totient is φ = 13442372730.

The previous prime is 13442372693. The next prime is 13442372761. The reversal of 13442372731 is 13727324431.

It is a happy number.

13442372731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13442372731 - 2⁹ = 13442372219 is a prime.

It is a super-2 number, since 2×13442372731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13442372761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721186365 + 6721186366.

It is an arithmetic number, because the mean of its divisors is an integer number (6721186366).

Almost surely, 2^13442372731 is an apocalyptic number.

13442372731 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442372731 is an equidigital number, since it uses as much as digits as its factorization.

13442372731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 37.

The spelling of 13442372731 in words is "thirteen billion, four hundred forty-two million, three hundred seventy-two thousand, seven hundred thirty-one".