131906634 has 16 divisors (see below), whose sum is σ = 264033120. Its totient is φ = 43932240.

The previous prime is 131906629. The next prime is 131906639. The reversal of 131906634 is 436609131.

It is an interprime number because it is at equal distance from previous prime (131906629) and next prime (131906639).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131906595 and 131906604.

It is not an unprimeable number, because it can be changed into a prime (131906639) 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, 769 + ... + 16260.

It is an arithmetic number, because the mean of its divisors is an integer number (16502070).

Almost surely, 2^131906634 is an apocalyptic number.

131906634 is an abundant number, since it is smaller than the sum of its proper divisors (132126486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131906634 is a wasteful number, since it uses less digits than its factorization.

131906634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18325.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 131906634 is about 11485.0613407156. The cubic root of 131906634 is about 509.0442615866.

The spelling of 131906634 in words is "one hundred thirty-one million, nine hundred six thousand, six hundred thirty-four".