1103111331000 has 128 divisors (see below), whose sum is σ = 3933379906560. Its totient is φ = 252139728000.

The previous prime is 1103111330989. The next prime is 1103111331029. The reversal of 1103111331000 is 1331113011.

It is a super-2 number, since 2×1103111331000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26243556 + ... + 26285555.

It is an arithmetic number, because the mean of its divisors is an integer number (30729530520).

Almost surely, 2^{1103111331000} is an apocalyptic number.

1103111331000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103111331000 is an abundant number, since it is smaller than the sum of its proper divisors (2830268575560).

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

1103111331000 is a wasteful number, since it uses less digits than its factorization.

1103111331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52529142 (or 52529128 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 15.

Adding to 1103111331000 its reverse (1331113011), we get a palindrome (1104442444011).

The spelling of 1103111331000 in words is "one trillion, one hundred three billion, one hundred eleven million, three hundred thirty-one thousand".