1011131213240 has 32 divisors (see below), whose sum is σ = 2353495068000. Its totient is φ = 390505847424.

The previous prime is 1011131213221. The next prime is 1011131213291. The reversal of 1011131213240 is 423121311101.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435831260 + ... + 435833579.

It is an arithmetic number, because the mean of its divisors is an integer number (73546720875).

Almost surely, 2^{1011131213240} is an apocalyptic number.

1011131213240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011131213240 is an abundant number, since it is smaller than the sum of its proper divisors (1342363854760).

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

1011131213240 is a wasteful number, since it uses less digits than its factorization.

1011131213240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871664879 (or 871664875 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1011131213240 its reverse (423121311101), we get a palindrome (1434252524341).

The spelling of 1011131213240 in words is "one trillion, eleven billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred forty".