126431526611031 has 4 divisors (see below), whose sum is σ = 168575368814712. Its totient is φ = 84287684407352.

The previous prime is 126431526611029. The next prime is 126431526611051. The reversal of 126431526611031 is 130116625134621.

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

It is a cyclic number.

It is not a de Polignac number, because 126431526611031 - 2¹ = 126431526611029 is a prime.

It is a super-2 number, since 2×126431526611031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126431526611051) 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, 21071921101836 + ... + 21071921101841.

It is an arithmetic number, because the mean of its divisors is an integer number (42143842203678).

Almost surely, 2^{126431526611031} is an apocalyptic number.

126431526611031 is a deficient number, since it is larger than the sum of its proper divisors (42143842203681).

126431526611031 is an equidigital number, since it uses as much as digits as its factorization.

126431526611031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42143842203680.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 126431526611031 in words is "one hundred twenty-six trillion, four hundred thirty-one billion, five hundred twenty-six million, six hundred eleven thousand, thirty-one".