131421241 has 16 divisors (see below), whose sum is σ = 157075200. Its totient is φ = 107509248.

The previous prime is 131421239. The next prime is 131421281. The reversal of 131421241 is 142124131.

It is not a de Polignac number, because 131421241 - 2¹ = 131421239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131421221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129745 + ... + 130753.

It is an arithmetic number, because the mean of its divisors is an integer number (9817200).

Almost surely, 2^131421241 is an apocalyptic number.

It is an amenable number.

131421241 is a deficient number, since it is larger than the sum of its proper divisors (25653959).

131421241 is a wasteful number, since it uses less digits than its factorization.

131421241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848.

The product of its digits is 192, while the sum is 19.

The square root of 131421241 is about 11463.9103712477. The cubic root of 131421241 is about 508.4190966169.

Adding to 131421241 its reverse (142124131), we get a palindrome (273545372).

The spelling of 131421241 in words is "one hundred thirty-one million, four hundred twenty-one thousand, two hundred forty-one".