131313451 has 2 divisors, whose sum is σ = 131313452. Its totient is φ = 131313450.

The previous prime is 131313449. The next prime is 131313461. The reversal of 131313451 is 154313131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131313451 - 2¹ = 131313449 is a prime.

Together with 131313449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131313431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65656725 + 65656726.

It is an arithmetic number, because the mean of its divisors is an integer number (65656726).

Almost surely, 2^131313451 is an apocalyptic number.

131313451 is a deficient number, since it is larger than the sum of its proper divisors (1).

131313451 is an equidigital number, since it uses as much as digits as its factorization.

131313451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 22.

The square root of 131313451 is about 11459.2081314548. The cubic root of 131313451 is about 508.2800590113.

Adding to 131313451 its reverse (154313131), we get a palindrome (285626582).

The spelling of 131313451 in words is "one hundred thirty-one million, three hundred thirteen thousand, four hundred fifty-one".