131434331 has 4 divisors (see below), whose sum is σ = 150210672. Its totient is φ = 112657992.

The previous prime is 131434319. The next prime is 131434339. The reversal of 131434331 is 133434131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131434331 is a prime.

It is a super-2 number, since 2×131434331² = 34549966730835122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131434297 and 131434306.

It is not an unprimeable number, because it can be changed into a prime (131434339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9388160 + ... + 9388173.

It is an arithmetic number, because the mean of its divisors is an integer number (37552668).

Almost surely, 2^131434331 is an apocalyptic number.

131434331 is a deficient number, since it is larger than the sum of its proper divisors (18776341).

131434331 is an equidigital number, since it uses as much as digits as its factorization.

131434331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18776340.

The product of its digits is 1296, while the sum is 23.

The square root of 131434331 is about 11464.4812791508. The cubic root of 131434331 is about 508.4359761436.

Adding to 131434331 its reverse (133434131), we get a palindrome (264868462).

The spelling of 131434331 in words is "one hundred thirty-one million, four hundred thirty-four thousand, three hundred thirty-one".