131333333 has 4 divisors (see below), whose sum is σ = 133293600. Its totient is φ = 129373068.

The previous prime is 131333317. The next prime is 131333353. The reversal of 131333333 is 333333131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 333333131 = 19 ⋅17543849.

It is a cyclic number.

It is not a de Polignac number, because 131333333 - 2⁴ = 131333317 is a prime.

It is a Duffinian number.

131333333 is a modest number, since divided by 33333 gives 1313 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 131333299 and 131333308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131333303) by changing a digit.

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, 980033 + ... + 980166.

It is an arithmetic number, because the mean of its divisors is an integer number (33323400).

Almost surely, 2^131333333 is an apocalyptic number.

It is an amenable number.

131333333 is a deficient number, since it is larger than the sum of its proper divisors (1960267).

131333333 is an equidigital number, since it uses as much as digits as its factorization.

131333333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960266.

The product of its digits is 2187, while the sum is 23.

The square root of 131333333 is about 11460.0756105708. The cubic root of 131333333 is about 508.3057103924.

Adding to 131333333 its reverse (333333131), we get a palindrome (464666464).

The spelling of 131333333 in words is "one hundred thirty-one million, three hundred thirty-three thousand, three hundred thirty-three".