131712406 has 16 divisors (see below), whose sum is σ = 226470816. Its totient is φ = 56278656.

The previous prime is 131712391. The next prime is 131712407. The reversal of 131712406 is 604217131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131712407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9241 + ... + 18676.

It is an arithmetic number, because the mean of its divisors is an integer number (14154426).

Almost surely, 2^131712406 is an apocalyptic number.

131712406 is a deficient number, since it is larger than the sum of its proper divisors (94758410).

131712406 is a wasteful number, since it uses less digits than its factorization.

131712406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28263.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 131712406 is about 11476.6025460499. The cubic root of 131712406 is about 508.7942887752.

Adding to 131712406 its reverse (604217131), we get a palindrome (735929537).

The spelling of 131712406 in words is "one hundred thirty-one million, seven hundred twelve thousand, four hundred six".