131445251 has 8 divisors (see below), whose sum is σ = 150339840. Its totient is φ = 112579848.

The previous prime is 131445233. The next prime is 131445263. The reversal of 131445251 is 152544131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131445251 - 2¹⁴ = 131428867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131445251.

It is not an unprimeable number, because it can be changed into a prime (131445151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3410 + ... + 16568.

It is an arithmetic number, because the mean of its divisors is an integer number (18792480).

Almost surely, 2^131445251 is an apocalyptic number.

131445251 is a deficient number, since it is larger than the sum of its proper divisors (18894589).

131445251 is a wasteful number, since it uses less digits than its factorization.

131445251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593.

The product of its digits is 2400, while the sum is 26.

The square root of 131445251 is about 11464.9575228171. The cubic root of 131445251 is about 508.4500566025.

Adding to 131445251 its reverse (152544131), we get a palindrome (283989382).

The spelling of 131445251 in words is "one hundred thirty-one million, four hundred forty-five thousand, two hundred fifty-one".