131420233 has 4 divisors (see below), whose sum is σ = 150194560. Its totient is φ = 112645908.

The previous prime is 131420173. The next prime is 131420269. The reversal of 131420233 is 332024131.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131420233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131420233.

It is not an unprimeable number, because it can be changed into a prime (131420273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9387153 + ... + 9387166.

It is an arithmetic number, because the mean of its divisors is an integer number (37548640).

Almost surely, 2^131420233 is an apocalyptic number.

It is an amenable number.

131420233 is a deficient number, since it is larger than the sum of its proper divisors (18774327).

131420233 is an equidigital number, since it uses as much as digits as its factorization.

131420233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774326.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131420233 is about 11463.8664071072. The cubic root of 131420233 is about 508.4177967566.

Adding to 131420233 its reverse (332024131), we get a palindrome (463444364).

The spelling of 131420233 in words is "one hundred thirty-one million, four hundred twenty thousand, two hundred thirty-three".