131324162503 has 4 divisors (see below), whose sum is σ = 133477017688. Its totient is φ = 129171307320.

The previous prime is 131324162483. The next prime is 131324162561. The reversal of 131324162503 is 305261423131.

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 131324162503 - 2²¹ = 131322065351 is a prime.

It is a super-2 number, since 2×131324162503² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131324162303) 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, 1076427501 + ... + 1076427622.

It is an arithmetic number, because the mean of its divisors is an integer number (33369254422).

Almost surely, 2^131324162503 is an apocalyptic number.

131324162503 is a deficient number, since it is larger than the sum of its proper divisors (2152855185).

131324162503 is an equidigital number, since it uses as much as digits as its factorization.

131324162503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152855184.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 131324162503 its reverse (305261423131), we get a palindrome (436585585634).

The spelling of 131324162503 in words is "one hundred thirty-one billion, three hundred twenty-four million, one hundred sixty-two thousand, five hundred three".