1111241323531 has 4 divisors (see below), whose sum is σ = 1169727709000. Its totient is φ = 1052754938064.

The previous prime is 1111241323501. The next prime is 1111241323547. The reversal of 1111241323531 is 1353231421111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111241323531 is a prime.

It is a super-2 number, since 2×1111241323531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111241323531.

It is not an unprimeable number, because it can be changed into a prime (1111241323501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29243192706 + ... + 29243192743.

It is an arithmetic number, because the mean of its divisors is an integer number (292431927250).

Almost surely, 2^{1111241323531} is an apocalyptic number.

1111241323531 is a deficient number, since it is larger than the sum of its proper divisors (58486385469).

1111241323531 is an equidigital number, since it uses as much as digits as its factorization.

1111241323531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58486385468.

The product of its digits is 2160, while the sum is 28.

Adding to 1111241323531 its reverse (1353231421111), we get a palindrome (2464472744642).

The spelling of 1111241323531 in words is "one trillion, one hundred eleven billion, two hundred forty-one million, three hundred twenty-three thousand, five hundred thirty-one".