13231131047 has 2 divisors, whose sum is σ = 13231131048. Its totient is φ = 13231131046.

The previous prime is 13231130999. The next prime is 13231131097. The reversal of 13231131047 is 74013113231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13231131047 - 2¹⁰ = 13231130023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231131097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615565523 + 6615565524.

It is an arithmetic number, because the mean of its divisors is an integer number (6615565524).

Almost surely, 2^13231131047 is an apocalyptic number.

13231131047 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231131047 is an equidigital number, since it uses as much as digits as its factorization.

13231131047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 13231131047 its reverse (74013113231), we get a palindrome (87244244278).

The spelling of 13231131047 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-one thousand, forty-seven".