1203111331400 has 192 divisors, whose sum is σ = 3121005064320. Its totient is φ = 427597414400.

The previous prime is 1203111331391. The next prime is 1203111331417. The reversal of 1203111331400 is 41331113021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30646184 + ... + 30685416.

It is an arithmetic number, because the mean of its divisors is an integer number (16255234710).

Almost surely, 2^{1203111331400} is an apocalyptic number.

1203111331400 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 1203111331400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560502532160).

1203111331400 is an abundant number, since it is smaller than the sum of its proper divisors (1917893732920).

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

1203111331400 is a wasteful number, since it uses less digits than its factorization.

1203111331400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39576 (or 39567 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1203111331400 its reverse (41331113021), we get a palindrome (1244442444421).

The spelling of 1203111331400 in words is "one trillion, two hundred three billion, one hundred eleven million, three hundred thirty-one thousand, four hundred".