131514421 has 2 divisors, whose sum is σ = 131514422. Its totient is φ = 131514420.

The previous prime is 131514407. The next prime is 131514479. The reversal of 131514421 is 124415131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117180625 + 14333796 = 10825^2 + 3786^2 .

It is an emirp because it is prime and its reverse (124415131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131514421 - 2⁵ = 131514389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131514392 and 131514401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131514491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65757210 + 65757211.

It is an arithmetic number, because the mean of its divisors is an integer number (65757211).

Almost surely, 2^131514421 is an apocalyptic number.

It is an amenable number.

131514421 is a deficient number, since it is larger than the sum of its proper divisors (1).

131514421 is an equidigital number, since it uses as much as digits as its factorization.

131514421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 131514421 is about 11467.9737094223. The cubic root of 131514421 is about 508.5392276272.

Adding to 131514421 its reverse (124415131), we get a palindrome (255929552).

The spelling of 131514421 in words is "one hundred thirty-one million, five hundred fourteen thousand, four hundred twenty-one".