126005031231 has 16 divisors (see below), whose sum is σ = 176858371200. Its totient is φ = 79577983008.

The previous prime is 126005031221. The next prime is 126005031239. The reversal of 126005031231 is 132130500621.

It is not a de Polignac number, because 126005031231 - 2⁵ = 126005031199 is a prime.

It is a super-2 number, since 2×126005031231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126005031239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344265 + ... + 1434941.

It is an arithmetic number, because the mean of its divisors is an integer number (11053648200).

Almost surely, 2^126005031231 is an apocalyptic number.

126005031231 is a deficient number, since it is larger than the sum of its proper divisors (50853339969).

126005031231 is a wasteful number, since it uses less digits than its factorization.

126005031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115078.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 126005031231 its reverse (132130500621), we get a palindrome (258135531852).

The spelling of 126005031231 in words is "one hundred twenty-six billion, five million, thirty-one thousand, two hundred thirty-one".