1131000443440 has 40 divisors (see below), whose sum is σ = 3005229751200. Its totient is φ = 387771580416.

The previous prime is 1131000443369. The next prime is 1131000443453. The reversal of 1131000443440 is 443440001311.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1131000443440² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009821265 + ... + 1009822384.

It is an arithmetic number, because the mean of its divisors is an integer number (75130743780).

Almost surely, 2^{1131000443440} is an apocalyptic number.

1131000443440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131000443440 is an abundant number, since it is smaller than the sum of its proper divisors (1874229307760).

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

1131000443440 is a wasteful number, since it uses less digits than its factorization.

1131000443440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019643669 (or 2019643663 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1131000443440 its reverse (443440001311), we get a palindrome (1574440444751).

The spelling of 1131000443440 in words is "one trillion, one hundred thirty-one billion, four hundred forty-three thousand, four hundred forty".