131993446 has 8 divisors (see below), whose sum is σ = 213220224. Its totient is φ = 60920040.

The previous prime is 131993431. The next prime is 131993483. The reversal of 131993446 is 644399131.

131993446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 131993399 and 131993408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538310 + ... + 2538361.

It is an arithmetic number, because the mean of its divisors is an integer number (26652528).

Almost surely, 2^131993446 is an apocalyptic number.

131993446 is a deficient number, since it is larger than the sum of its proper divisors (81226778).

131993446 is a wasteful number, since it uses less digits than its factorization.

131993446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076686.

The product of its digits is 69984, while the sum is 40.

The square root of 131993446 is about 11488.8400632962. The cubic root of 131993446 is about 509.1559098995.

The spelling of 131993446 in words is "one hundred thirty-one million, nine hundred ninety-three thousand, four hundred forty-six".