131343407 has 16 divisors (see below), whose sum is σ = 147450240. Its totient is φ = 116159232.

The previous prime is 131343379. The next prime is 131343449. The reversal of 131343407 is 704343131.

It is a cyclic number.

It is not a de Polignac number, because 131343407 - 2¹⁸ = 131081263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131343467) 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, 50378 + ... + 52920.

It is an arithmetic number, because the mean of its divisors is an integer number (9215640).

Almost surely, 2^131343407 is an apocalyptic number.

131343407 is a deficient number, since it is larger than the sum of its proper divisors (16106833).

131343407 is a wasteful number, since it uses less digits than its factorization.

131343407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 131343407 is about 11460.5151280385. The cubic root of 131343407 is about 508.3187066889.

Adding to 131343407 its reverse (704343131), we get a palindrome (835686538).

The spelling of 131343407 in words is "one hundred thirty-one million, three hundred forty-three thousand, four hundred seven".