1131343400220 has 48 divisors (see below), whose sum is σ = 3455739842688. Its totient is φ = 274265066560.

The previous prime is 1131343400207. The next prime is 1131343400263. The reversal of 1131343400220 is 220043431311.

It is a happy number.

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, 857077674 + ... + 857078993.

It is an arithmetic number, because the mean of its divisors is an integer number (71994580056).

Almost surely, 2^{1131343400220} is an apocalyptic number.

1131343400220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131343400220 is an abundant number, since it is smaller than the sum of its proper divisors (2324396442468).

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

1131343400220 is a wasteful number, since it uses less digits than its factorization.

1131343400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714156690 (or 1714156688 counting only the distinct ones).

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

Adding to 1131343400220 its reverse (220043431311), we get a palindrome (1351386831531).

The spelling of 1131343400220 in words is "one trillion, one hundred thirty-one billion, three hundred forty-three million, four hundred thousand, two hundred twenty".