111321335531 has 8 divisors (see below), whose sum is σ = 127276909824. Its totient is φ = 95378892840.

The previous prime is 111321335459. The next prime is 111321335537. The reversal of 111321335531 is 135533123111.

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

It is a de Polignac number, because none of the positive numbers 2^k-111321335531 is a prime.

It is a super-2 number, since 2×111321335531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111321335494 and 111321335503.

It is not an unprimeable number, because it can be changed into a prime (111321335537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3264725 + ... + 3298646.

It is an arithmetic number, because the mean of its divisors is an integer number (15909613728).

Almost surely, 2^111321335531 is an apocalyptic number.

111321335531 is a deficient number, since it is larger than the sum of its proper divisors (15955574293).

111321335531 is an equidigital number, since it uses as much as digits as its factorization.

111321335531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565801.

The product of its digits is 4050, while the sum is 29.

Adding to 111321335531 its reverse (135533123111), we get a palindrome (246854458642).

The spelling of 111321335531 in words is "one hundred eleven billion, three hundred twenty-one million, three hundred thirty-five thousand, five hundred thirty-one".