131430333 has 4 divisors (see below), whose sum is σ = 175240448. Its totient is φ = 87620220.

The previous prime is 131430319. The next prime is 131430371. The reversal of 131430333 is 333034131.

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.

It is not a de Polignac number, because 131430333 - 2²¹ = 129333181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131435333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21905053 + ... + 21905058.

It is an arithmetic number, because the mean of its divisors is an integer number (43810112).

Almost surely, 2^131430333 is an apocalyptic number.

It is an amenable number.

131430333 is a deficient number, since it is larger than the sum of its proper divisors (43810115).

131430333 is an equidigital number, since it uses as much as digits as its factorization.

131430333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43810114.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 131430333 is about 11464.3069131980. The cubic root of 131430333 is about 508.4308208501.

Adding to 131430333 its reverse (333034131), we get a palindrome (464464464).

The spelling of 131430333 in words is "one hundred thirty-one million, four hundred thirty thousand, three hundred thirty-three".