131231000023229 has 2 divisors, whose sum is σ = 131231000023230. Its totient is φ = 131231000023228.

The previous prime is 131231000023223. The next prime is 131231000023373. The reversal of 131231000023229 is 922320000132131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101068881103204 + 30162118920025 = 10053302^2 + 5492005^2 .

It is a cyclic number.

It is not a de Polignac number, because 131231000023229 - 2¹⁶ = 131230999957693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131231000023223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65615500011614 + 65615500011615.

It is an arithmetic number, because the mean of its divisors is an integer number (65615500011615).

Almost surely, 2^{131231000023229} is an apocalyptic number.

It is an amenable number.

131231000023229 is a deficient number, since it is larger than the sum of its proper divisors (1).

131231000023229 is an equidigital number, since it uses as much as digits as its factorization.

131231000023229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 131231000023229 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, twenty-three thousand, two hundred twenty-nine".