1231231128050 has 48 divisors (see below), whose sum is σ = 2855177024832. Its totient is φ = 383760350400.

The previous prime is 1231231128019. The next prime is 1231231128073. The reversal of 1231231128050 is 508211321321.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159896297 + ... + 159903996.

It is an arithmetic number, because the mean of its divisors is an integer number (59482854684).

Almost surely, 2^{1231231128050} is an apocalyptic number.

1231231128050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231231128050 is an abundant number, since it is smaller than the sum of its proper divisors (1623945896782).

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

1231231128050 is a wasteful number, since it uses less digits than its factorization.

1231231128050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319800323 (or 319800318 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 1231231128050 its reverse (508211321321), we get a palindrome (1739442449371).

The spelling of 1231231128050 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-one million, one hundred twenty-eight thousand, fifty".