111530423452 has 24 divisors (see below), whose sum is σ = 223068142080. Its totient is φ = 47797189680.

The previous prime is 111530423443. The next prime is 111530423461. The reversal of 111530423452 is 254324035111.

It is an interprime number because it is at equal distance from previous prime (111530423443) and next prime (111530423461).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332249 + ... + 1413487.

It is an arithmetic number, because the mean of its divisors is an integer number (9294505920).

Almost surely, 2^111530423452 is an apocalyptic number.

It is an amenable number.

111530423452 is an abundant number, since it is smaller than the sum of its proper divisors (111537718628).

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

111530423452 is a wasteful number, since it uses less digits than its factorization.

111530423452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130281 (or 130279 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 111530423452 its reverse (254324035111), we get a palindrome (365854458563).

The spelling of 111530423452 in words is "one hundred eleven billion, five hundred thirty million, four hundred twenty-three thousand, four hundred fifty-two".