131084621 has 4 divisors (see below), whose sum is σ = 132744000. Its totient is φ = 129425244.

The previous prime is 131084617. The next prime is 131084623. The reversal of 131084621 is 126480131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131084621 - 2² = 131084617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131084623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829571 + ... + 829728.

It is an arithmetic number, because the mean of its divisors is an integer number (33186000).

Almost surely, 2^131084621 is an apocalyptic number.

It is an amenable number.

131084621 is a deficient number, since it is larger than the sum of its proper divisors (1659379).

131084621 is an equidigital number, since it uses as much as digits as its factorization.

131084621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659378.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 131084621 is about 11449.2192310218. The cubic root of 131084621 is about 507.9846402965.

The spelling of 131084621 in words is "one hundred thirty-one million, eighty-four thousand, six hundred twenty-one".