131213303 has 4 divisors (see below), whose sum is σ = 141306648. Its totient is φ = 121119960.

The previous prime is 131213281. The next prime is 131213317. The reversal of 131213303 is 303312131.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-131213303 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 (131213333) 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, 5046653 + ... + 5046678.

It is an arithmetic number, because the mean of its divisors is an integer number (35326662).

Almost surely, 2^131213303 is an apocalyptic number.

131213303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131213303 is a deficient number, since it is larger than the sum of its proper divisors (10093345).

131213303 is a wasteful number, since it uses less digits than its factorization.

131213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093344.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131213303 is about 11454.8375370408. The cubic root of 131213303 is about 508.1508105676.

Adding to 131213303 its reverse (303312131), we get a palindrome (434525434).

The spelling of 131213303 in words is "one hundred thirty-one million, two hundred thirteen thousand, three hundred three".