1121113531531 has 8 divisors (see below), whose sum is σ = 1282640035040. Its totient is φ = 959928884928.

The previous prime is 1121113531493. The next prime is 1121113531537. The reversal of 1121113531531 is 1351353111211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121113531531 - 2¹¹ = 1121113529483 is a prime.

It is a super-2 number, since 2×1121113531531² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121113531531.

It is not an unprimeable number, because it can be changed into a prime (1121113531537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85457196 + ... + 85470313.

It is an arithmetic number, because the mean of its divisors is an integer number (160330004380).

Almost surely, 2^{1121113531531} is an apocalyptic number.

1121113531531 is a deficient number, since it is larger than the sum of its proper divisors (161526503509).

1121113531531 is an equidigital number, since it uses as much as digits as its factorization.

1121113531531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170928453.

The product of its digits is 1350, while the sum is 28.

Adding to 1121113531531 its reverse (1351353111211), we get a palindrome (2472466642742).

The spelling of 1121113531531 in words is "one trillion, one hundred twenty-one billion, one hundred thirteen million, five hundred thirty-one thousand, five hundred thirty-one".