1111231354530 has 128 divisors (see below), whose sum is σ = 3010394419200. Its totient is φ = 260042720000.

The previous prime is 1111231354469. The next prime is 1111231354531. The reversal of 1111231354530 is 354531321111.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1111231354531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56252155 + ... + 56271905.

It is an arithmetic number, because the mean of its divisors is an integer number (23518706400).

Almost surely, 2^{1111231354530} is an apocalyptic number.

1111231354530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111231354530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1505197209600).

1111231354530 is an abundant number, since it is smaller than the sum of its proper divisors (1899163064670).

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

1111231354530 is a wasteful number, since it uses less digits than its factorization.

1111231354530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25680.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 1111231354530 its reverse (354531321111), we get a palindrome (1465762675641).

The spelling of 1111231354530 in words is "one trillion, one hundred eleven billion, two hundred thirty-one million, three hundred fifty-four thousand, five hundred thirty".