131416021 has 16 divisors (see below), whose sum is σ = 146865600. Its totient is φ = 116582400.

The previous prime is 131416013. The next prime is 131416031. The reversal of 131416021 is 120614131.

It is not a de Polignac number, because 131416021 - 2³ = 131416013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131416021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131416031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92565 + ... + 93973.

It is an arithmetic number, because the mean of its divisors is an integer number (9179100).

Almost surely, 2^131416021 is an apocalyptic number.

131416021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131416021 is a deficient number, since it is larger than the sum of its proper divisors (15449579).

131416021 is a wasteful number, since it uses less digits than its factorization.

131416021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 131416021 is about 11463.6826979815. The cubic root of 131416021 is about 508.4123651256.

The spelling of 131416021 in words is "one hundred thirty-one million, four hundred sixteen thousand, twenty-one".