131436401 has 8 divisors (see below), whose sum is σ = 139726944. Its totient is φ = 123208000.

The previous prime is 131436397. The next prime is 131436419. The reversal of 131436401 is 104634131.

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

It is a cyclic number.

It is not a de Polignac number, because 131436401 - 2² = 131436397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131435401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11135 + ... + 19668.

It is an arithmetic number, because the mean of its divisors is an integer number (17465868).

Almost surely, 2^131436401 is an apocalyptic number.

It is an amenable number.

131436401 is a deficient number, since it is larger than the sum of its proper divisors (8290543).

131436401 is a wasteful number, since it uses less digits than its factorization.

131436401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31071.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 131436401 is about 11464.5715576292. The cubic root of 131436401 is about 508.4386453014.

The spelling of 131436401 in words is "one hundred thirty-one million, four hundred thirty-six thousand, four hundred one".