111231323130 has 64 divisors (see below), whose sum is σ = 274134233088. Its totient is φ = 28872829440.

The previous prime is 111231323123. The next prime is 111231323131. The reversal of 111231323130 is 31323132111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111231323097 and 111231323106.

It is not an unprimeable number, because it can be changed into a prime (111231323131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73491 + ... + 477350.

It is an arithmetic number, because the mean of its divisors is an integer number (4283347392).

Almost surely, 2^111231323130 is an apocalyptic number.

111231323130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111231323130 is an abundant number, since it is smaller than the sum of its proper divisors (162902909958).

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

111231323130 is a wasteful number, since it uses less digits than its factorization.

111231323130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551031.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 111231323130 its reverse (31323132111), we get a palindrome (142554455241).

The spelling of 111231323130 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred twenty-three thousand, one hundred thirty".