111162320531 has 4 divisors (see below), whose sum is σ = 117012969000. Its totient is φ = 105311672064.

The previous prime is 111162320519. The next prime is 111162320537. The reversal of 111162320531 is 135023261111.

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

It is a cyclic number.

It is not a de Polignac number, because 111162320531 - 2¹⁴ = 111162304147 is a prime.

It is a super-2 number, since 2×111162320531² (a number of 23 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 111162320531.

It is not an unprimeable number, because it can be changed into a prime (111162320537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2925324206 + ... + 2925324243.

It is an arithmetic number, because the mean of its divisors is an integer number (29253242250).

Almost surely, 2^111162320531 is an apocalyptic number.

111162320531 is a deficient number, since it is larger than the sum of its proper divisors (5850648469).

111162320531 is an equidigital number, since it uses as much as digits as its factorization.

111162320531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850648468.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 111162320531 its reverse (135023261111), we get a palindrome (246185581642).

The spelling of 111162320531 in words is "one hundred eleven billion, one hundred sixty-two million, three hundred twenty thousand, five hundred thirty-one".