131401449 has 12 divisors (see below), whose sum is σ = 200967156. Its totient is φ = 82447872.

The previous prime is 131401441. The next prime is 131401451. The reversal of 131401449 is 944104131.

It can be written as a sum of positive squares in 2 ways, for example, as 45968400 + 85433049 = 6780^2 + 9243^2 .

It is not a de Polignac number, because 131401449 - 2³ = 131401441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131401441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429264 + ... + 429569.

It is an arithmetic number, because the mean of its divisors is an integer number (16747263).

Almost surely, 2^131401449 is an apocalyptic number.

It is an amenable number.

131401449 is a deficient number, since it is larger than the sum of its proper divisors (69565707).

131401449 is a wasteful number, since it uses less digits than its factorization.

131401449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858856 (or 858853 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 131401449 is about 11463.0471079901. The cubic root of 131401449 is about 508.3935727471.

The spelling of 131401449 in words is "one hundred thirty-one million, four hundred one thousand, four hundred forty-nine".