131173434 has 48 divisors (see below), whose sum is σ = 327824640. Its totient is φ = 37130400.

The previous prime is 131173429. The next prime is 131173457. The reversal of 131173434 is 434371131.

131173434 is a `hidden beast` number, since 1 + 311 + 7 + 343 + 4 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131173398 and 131173407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8959 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (6829680).

Almost surely, 2^131173434 is an apocalyptic number.

131173434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131173434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163912320).

131173434 is an abundant number, since it is smaller than the sum of its proper divisors (196651206).

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

131173434 is a wasteful number, since it uses less digits than its factorization.

131173434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675 (or 9672 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 131173434 is about 11453.0971357096. The cubic root of 131173434 is about 508.0993383554.

The spelling of 131173434 in words is "one hundred thirty-one million, one hundred seventy-three thousand, four hundred thirty-four".