131613333 has 4 divisors (see below), whose sum is σ = 175484448. Its totient is φ = 87742220.

The previous prime is 131613331. The next prime is 131613341. The reversal of 131613333 is 333316131.

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 not a de Polignac number, because 131613333 - 2¹ = 131613331 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131613331) 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, 21935553 + ... + 21935558.

It is an arithmetic number, because the mean of its divisors is an integer number (43871112).

Almost surely, 2^131613333 is an apocalyptic number.

It is an amenable number.

131613333 is a deficient number, since it is larger than the sum of its proper divisors (43871115).

131613333 is an equidigital number, since it uses as much as digits as its factorization.

131613333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43871114.

The product of its digits is 1458, while the sum is 24.

The square root of 131613333 is about 11472.2854305496. The cubic root of 131613333 is about 508.6666864681. Note that the first 4 decimals are identical.

Adding to 131613333 its reverse (333316131), we get a palindrome (464929464).

The spelling of 131613333 in words is "one hundred thirty-one million, six hundred thirteen thousand, three hundred thirty-three".