126431550631 has 8 divisors (see below), whose sum is σ = 129776524128. Its totient is φ = 123127620000.

The previous prime is 126431550611. The next prime is 126431550727. The reversal of 126431550631 is 136055134621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126431550631 is a prime.

It is a super-2 number, since 2×126431550631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126431550611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10254475 + ... + 10266796.

It is an arithmetic number, because the mean of its divisors is an integer number (16222065516).

Almost surely, 2^126431550631 is an apocalyptic number.

126431550631 is a deficient number, since it is larger than the sum of its proper divisors (3344973497).

126431550631 is a wasteful number, since it uses less digits than its factorization.

126431550631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20521433.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 126431550631 in words is "one hundred twenty-six billion, four hundred thirty-one million, five hundred fifty thousand, six hundred thirty-one".