126311312020 has 48 divisors (see below), whose sum is σ = 267419013120. Its totient is φ = 50112324864.

The previous prime is 126311311969. The next prime is 126311312051. The reversal of 126311312020 is 20213113621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 126311311982 and 126311312000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15461977 + ... + 15470143.

It is an arithmetic number, because the mean of its divisors is an integer number (5571229440).

Almost surely, 2^126311312020 is an apocalyptic number.

126311312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126311312020 is an abundant number, since it is smaller than the sum of its proper divisors (141107701100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126311312020 is a wasteful number, since it uses less digits than its factorization.

126311312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14392 (or 14390 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 126311312020 its reverse (20213113621), we get a palindrome (146524425641).

The spelling of 126311312020 in words is "one hundred twenty-six billion, three hundred eleven million, three hundred twelve thousand, twenty".