131400331 has 4 divisors (see below), whose sum is σ = 132206632. Its totient is φ = 130594032.

The previous prime is 131400329. The next prime is 131400341. The reversal of 131400331 is 133004131.

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 131400331 - 2¹ = 131400329 is a prime.

It is a super-2 number, since 2×131400331² = 34532093973819122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131400301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402906 + ... + 403231.

It is an arithmetic number, because the mean of its divisors is an integer number (33051658).

Almost surely, 2^131400331 is an apocalyptic number.

131400331 is a deficient number, since it is larger than the sum of its proper divisors (806301).

131400331 is an equidigital number, since it uses as much as digits as its factorization.

131400331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806300.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131400331 is about 11462.9983424931. The cubic root of 131400331 is about 508.3921308918.

Adding to 131400331 its reverse (133004131), we get a palindrome (264404462).

The spelling of 131400331 in words is "one hundred thirty-one million, four hundred thousand, three hundred thirty-one".