131324406 has 8 divisors (see below), whose sum is σ = 262648824. Its totient is φ = 43774800.

The previous prime is 131324387. The next prime is 131324423. The reversal of 131324406 is 604423131.

It is a sphenic number, since it is the product of 3 distinct primes.

131324406 is an admirable number.

It is a super-2 number, since 2×131324406² = 34492199222505672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10943695 + ... + 10943706.

It is an arithmetic number, because the mean of its divisors is an integer number (32831103).

Almost surely, 2^131324406 is an apocalyptic number.

131324406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131324406 is a wasteful number, since it uses less digits than its factorization.

131324406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21887406.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 131324406 is about 11459.6861213560. The cubic root of 131324406 is about 508.2941932658.

Adding to 131324406 its reverse (604423131), we get a palindrome (735747537).

The spelling of 131324406 in words is "one hundred thirty-one million, three hundred twenty-four thousand, four hundred six".