131863406 has 8 divisors (see below), whose sum is σ = 204615720. Its totient is φ = 63658168.

The previous prime is 131863399. The next prime is 131863409. The reversal of 131863406 is 604368131.

131863406 is nontrivially palindromic in base 15.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131863409) 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, 1136696 + ... + 1136811.

It is an arithmetic number, because the mean of its divisors is an integer number (25576965).

Almost surely, 2^131863406 is an apocalyptic number.

131863406 is a deficient number, since it is larger than the sum of its proper divisors (72752314).

131863406 is a wasteful number, since it uses less digits than its factorization.

131863406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273538.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 131863406 is about 11483.1792636012. The cubic root of 131863406 is about 508.9886480846.

The spelling of 131863406 in words is "one hundred thirty-one million, eight hundred sixty-three thousand, four hundred six".