111031223130 has 24 divisors (see below), whose sum is σ = 288681180372. Its totient is φ = 29608326144.

The previous prime is 111031223117. The next prime is 111031223131. The reversal of 111031223130 is 31322130111.

It can be written as a sum of positive squares in 2 ways, for example, as 107847216801 + 3184006329 = 328401^2 + 56427^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111031223131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 616840039 + ... + 616840218.

Almost surely, 2^111031223130 is an apocalyptic number.

111031223130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111031223130 is an abundant number, since it is smaller than the sum of its proper divisors (177649957242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111031223130 is a wasteful number, since it uses less digits than its factorization.

111031223130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233680270 (or 1233680267 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 111031223130 its reverse (31322130111), we get a palindrome (142353353241).

The spelling of 111031223130 in words is "one hundred eleven billion, thirty-one million, two hundred twenty-three thousand, one hundred thirty".