131122403 has 4 divisors (see below), whose sum is σ = 131148288. Its totient is φ = 131096520.

The previous prime is 131122393. The next prime is 131122421. The reversal of 131122403 is 304221131.

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

It is a cyclic number.

It is not a de Polignac number, because 131122403 - 2¹⁰ = 131121379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131122483) 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, 2576 + ... + 16397.

It is an arithmetic number, because the mean of its divisors is an integer number (32787072).

Almost surely, 2^131122403 is an apocalyptic number.

131122403 is a deficient number, since it is larger than the sum of its proper divisors (25885).

131122403 is an equidigital number, since it uses as much as digits as its factorization.

131122403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25884.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 131122403 is about 11450.8690936540. The cubic root of 131122403 is about 508.0334404072.

Adding to 131122403 its reverse (304221131), we get a palindrome (435343534).

The spelling of 131122403 in words is "one hundred thirty-one million, one hundred twenty-two thousand, four hundred three".