131349621 has 16 divisors (see below), whose sum is σ = 188866944. Its totient is φ = 80718144.

The previous prime is 131349611. The next prime is 131349629. The reversal of 131349621 is 126943131.

It is not a de Polignac number, because 131349621 - 2¹⁹ = 130825333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131349629) 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, 32695 + ... + 36491.

It is an arithmetic number, because the mean of its divisors is an integer number (11804184).

Almost surely, 2^131349621 is an apocalyptic number.

It is an amenable number.

131349621 is a deficient number, since it is larger than the sum of its proper divisors (57517323).

131349621 is a wasteful number, since it uses less digits than its factorization.

131349621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700.

The product of its digits is 3888, while the sum is 30.

The square root of 131349621 is about 11460.7862295743. The cubic root of 131349621 is about 508.3267229335.

The spelling of 131349621 in words is "one hundred thirty-one million, three hundred forty-nine thousand, six hundred twenty-one".