111523232131 has 8 divisors (see below), whose sum is σ = 113667369984. Its totient is φ = 109380573120.

The previous prime is 111523232089. The next prime is 111523232137. The reversal of 111523232131 is 131232325111.

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 111523232131 - 2¹¹ = 111523230083 is a prime.

It is a super-2 number, since 2×111523232131² (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 = 111523232096 and 111523232105.

It is not an unprimeable number, because it can be changed into a prime (111523232137) 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, 216835 + ... + 519676.

It is an arithmetic number, because the mean of its divisors is an integer number (14208421248).

Almost surely, 2^111523232131 is an apocalyptic number.

111523232131 is a deficient number, since it is larger than the sum of its proper divisors (2144137853).

111523232131 is an equidigital number, since it uses as much as digits as its factorization.

111523232131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739421.

The product of its digits is 1080, while the sum is 25.

Adding to 111523232131 its reverse (131232325111), we get a palindrome (242755557242).

The spelling of 111523232131 in words is "one hundred eleven billion, five hundred twenty-three million, two hundred thirty-two thousand, one hundred thirty-one".