131320355 has 4 divisors (see below), whose sum is σ = 157584432. Its totient is φ = 105056280.

The previous prime is 131320339. The next prime is 131320369. The reversal of 131320355 is 553023131.

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

It is not a de Polignac number, because 131320355 - 2⁴ = 131320339 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 131320355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13132031 + ... + 13132040.

It is an arithmetic number, because the mean of its divisors is an integer number (39396108).

Almost surely, 2^131320355 is an apocalyptic number.

131320355 is a deficient number, since it is larger than the sum of its proper divisors (26264077).

131320355 is an equidigital number, since it uses as much as digits as its factorization.

131320355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26264076.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 131320355 is about 11459.5093699512. The cubic root of 131320355 is about 508.2889667152.

Adding to 131320355 its reverse (553023131), we get a palindrome (684343486).

The spelling of 131320355 in words is "one hundred thirty-one million, three hundred twenty thousand, three hundred fifty-five".