131667331 has 4 divisors (see below), whose sum is σ = 131695200. Its totient is φ = 131639464.

The previous prime is 131667311. The next prime is 131667343. The reversal of 131667331 is 133766131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131667331 - 2¹⁹ = 131143043 is a prime.

It is a super-2 number, since 2×131667331² = 34672572105327122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131667293 and 131667302.

It is not an unprimeable number, because it can be changed into a prime (131667301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4891 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (32923800).

Almost surely, 2^131667331 is an apocalyptic number.

131667331 is a deficient number, since it is larger than the sum of its proper divisors (27869).

131667331 is an equidigital number, since it uses as much as digits as its factorization.

131667331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27868.

The product of its digits is 6804, while the sum is 31.

The square root of 131667331 is about 11474.6385999734. The cubic root of 131667331 is about 508.7362418027.

The spelling of 131667331 in words is "one hundred thirty-one million, six hundred sixty-seven thousand, three hundred thirty-one".