111401305131 has 4 divisors (see below), whose sum is σ = 148535073512. Its totient is φ = 74267536752.

The previous prime is 111401305129. The next prime is 111401305177. The reversal of 111401305131 is 131503104111.

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

It is not a de Polignac number, because 111401305131 - 2¹ = 111401305129 is a prime.

It is a super-2 number, since 2×111401305131² (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 = 111401305098 and 111401305107.

It is not an unprimeable number, because it can be changed into a prime (111401305231) 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, 18566884186 + ... + 18566884191.

It is an arithmetic number, because the mean of its divisors is an integer number (37133768378).

Almost surely, 2^111401305131 is an apocalyptic number.

111401305131 is a deficient number, since it is larger than the sum of its proper divisors (37133768381).

111401305131 is an equidigital number, since it uses as much as digits as its factorization.

111401305131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37133768380.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 111401305131 its reverse (131503104111), we get a palindrome (242904409242).

The spelling of 111401305131 in words is "one hundred eleven billion, four hundred one million, three hundred five thousand, one hundred thirty-one".