131333320 has 32 divisors (see below), whose sum is σ = 311054400. Its totient is φ = 49768128.

The previous prime is 131333317. The next prime is 131333353. The reversal of 131333320 is 23333131.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85644 + ... + 87163.

It is an arithmetic number, because the mean of its divisors is an integer number (9720450).

Almost surely, 2^131333320 is an apocalyptic number.

131333320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131333320 is an abundant number, since it is smaller than the sum of its proper divisors (179721080).

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

131333320 is a wasteful number, since it uses less digits than its factorization.

131333320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172837 (or 172833 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 131333320 is about 11460.0750433843. The cubic root of 131333320 is about 508.3056936209.

Adding to 131333320 its reverse (23333131), we get a palindrome (154666451).

The spelling of 131333320 in words is "one hundred thirty-one million, three hundred thirty-three thousand, three hundred twenty".