131342432 has 48 divisors (see below), whose sum is σ = 280384272. Its totient is φ = 60203520.

The previous prime is 131342429. The next prime is 131342441. The reversal of 131342432 is 234243131.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 131342398 and 131342407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64307 + ... + 66317.

It is an arithmetic number, because the mean of its divisors is an integer number (5841339).

Almost surely, 2^131342432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131342432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140192136).

131342432 is an abundant number, since it is smaller than the sum of its proper divisors (149041840).

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

131342432 is a wasteful number, since it uses less digits than its factorization.

131342432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2183 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 131342432 is about 11460.4725906046. The cubic root of 131342432 is about 508.3174488870.

Adding to 131342432 its reverse (234243131), we get a palindrome (365585563).

The spelling of 131342432 in words is "one hundred thirty-one million, three hundred forty-two thousand, four hundred thirty-two".