1311101141240 has 64 divisors (see below), whose sum is σ = 3218362139520. Its totient is φ = 476733712000.

The previous prime is 1311101141213. The next prime is 1311101141243. The reversal of 1311101141240 is 421411011131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311101141243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7521875 + ... + 7694205.

It is an arithmetic number, because the mean of its divisors is an integer number (50286908430).

Almost surely, 2^{1311101141240} is an apocalyptic number.

1311101141240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311101141240 is an abundant number, since it is smaller than the sum of its proper divisors (1907260998280).

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

1311101141240 is a wasteful number, since it uses less digits than its factorization.

1311101141240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189644 (or 189640 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 1311101141240 its reverse (421411011131), we get a palindrome (1732512152371).

The spelling of 1311101141240 in words is "one trillion, three hundred eleven billion, one hundred one million, one hundred forty-one thousand, two hundred forty".