131434740 has 72 divisors (see below), whose sum is σ = 400877568. Its totient is φ = 34856640.

The previous prime is 131434739. The next prime is 131434747. The reversal of 131434740 is 47434131.

131434740 is a `hidden beast` number, since 1 + 314 + 347 + 4 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131434747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32469 + ... + 36291.

It is an arithmetic number, because the mean of its divisors is an integer number (5567744).

Almost surely, 2^131434740 is an apocalyptic number.

131434740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131434740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200438784).

131434740 is an abundant number, since it is smaller than the sum of its proper divisors (269442828).

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

131434740 is a wasteful number, since it uses less digits than its factorization.

131434740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029 (or 4024 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 131434740 is about 11464.4991168389. The cubic root of 131434740 is about 508.4365035301.

Adding to 131434740 its reverse (47434131), we get a palindrome (178868871).

The spelling of 131434740 in words is "one hundred thirty-one million, four hundred thirty-four thousand, seven hundred forty".