131321351 has 4 divisors (see below), whose sum is σ = 150081552. Its totient is φ = 112561152.

The previous prime is 131321327. The next prime is 131321353. The reversal of 131321351 is 153123131.

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 131321351 - 2⁶ = 131321287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131321353) 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, 9380090 + ... + 9380103.

It is an arithmetic number, because the mean of its divisors is an integer number (37520388).

Almost surely, 2^131321351 is an apocalyptic number.

131321351 is a deficient number, since it is larger than the sum of its proper divisors (18760201).

131321351 is an equidigital number, since it uses as much as digits as its factorization.

131321351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18760200.

The product of its digits is 270, while the sum is 20.

The square root of 131321351 is about 11459.5528272267. The cubic root of 131321351 is about 508.2902517522.

Adding to 131321351 its reverse (153123131), we get a palindrome (284444482).

The spelling of 131321351 in words is "one hundred thirty-one million, three hundred twenty-one thousand, three hundred fifty-one".