131402241 has 6 divisors (see below), whose sum is σ = 189803250. Its totient is φ = 87601488.

The previous prime is 131402239. The next prime is 131402267. The reversal of 131402241 is 142204131.

It can be written as a sum of positive squares in only one way, i.e., 78694641 + 52707600 = 8871^2 + 7260^2 .

It is not a de Polignac number, because 131402241 - 2¹ = 131402239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131402221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7300116 + ... + 7300133.

It is an arithmetic number, because the mean of its divisors is an integer number (31633875).

Almost surely, 2^131402241 is an apocalyptic number.

It is an amenable number.

131402241 is a deficient number, since it is larger than the sum of its proper divisors (58401009).

131402241 is a wasteful number, since it uses less digits than its factorization.

131402241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14600255 (or 14600252 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131402241 is about 11463.0816537265. The cubic root of 131402241 is about 508.3945941637.

Adding to 131402241 its reverse (142204131), we get a palindrome (273606372).

The spelling of 131402241 in words is "one hundred thirty-one million, four hundred two thousand, two hundred forty-one".