1131240332400 has 120 divisors (see below), whose sum is σ = 3625785945264. Its totient is φ = 301493760000.

The previous prime is 1131240332333. The next prime is 1131240332413. The reversal of 1131240332400 is 42330421311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent 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, 1867150 + ... + 2397650.

Almost surely, 2^{1131240332400} is an apocalyptic number.

1131240332400 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 1131240332400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1812892972632).

1131240332400 is an abundant number, since it is smaller than the sum of its proper divisors (2494545612864).

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

1131240332400 is a wasteful number, since it uses less digits than its factorization.

1131240332400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532299 (or 532288 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1131240332400 its reverse (42330421311), we get a palindrome (1173570753711).

The spelling of 1131240332400 in words is "one trillion, one hundred thirty-one billion, two hundred forty million, three hundred thirty-two thousand, four hundred".