1231113132100 has 72 divisors (see below), whose sum is σ = 2692020560768. Its totient is φ = 488672352000.

The previous prime is 1231113132097. The next prime is 1231113132113. The reversal of 1231113132100 is 12313111321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14559544 + ... + 14643856.

Almost surely, 2^{1231113132100} is an apocalyptic number.

1231113132100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231113132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1346010280384).

1231113132100 is an abundant number, since it is smaller than the sum of its proper divisors (1460907428668).

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

1231113132100 is a wasteful number, since it uses less digits than its factorization.

1231113132100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85445 (or 85438 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1231113132100 its reverse (12313111321), we get a palindrome (1243426243421).

The spelling of 1231113132100 in words is "one trillion, two hundred thirty-one billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred".