131224430 has 32 divisors (see below), whose sum is σ = 247351104. Its totient is φ = 50029056.

The previous prime is 131224427. The next prime is 131224441. The reversal of 131224430 is 34422131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76664 + ... + 78356.

It is an arithmetic number, because the mean of its divisors is an integer number (7729722).

Almost surely, 2^131224430 is an apocalyptic number.

131224430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131224430 is a deficient number, since it is larger than the sum of its proper divisors (116126674).

131224430 is a wasteful number, since it uses less digits than its factorization.

131224430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 131224430 is about 11455.3232167408. The cubic root of 131224430 is about 508.1651740357.

Adding to 131224430 its reverse (34422131), we get a palindrome (165646561).

The spelling of 131224430 in words is "one hundred thirty-one million, two hundred twenty-four thousand, four hundred thirty".