131442520 has 32 divisors (see below), whose sum is σ = 322632720. Its totient is φ = 47797120.

The previous prime is 131442517. The next prime is 131442583. The reversal of 131442520 is 25244131.

131442520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 131442491 and 131442500.

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, 148927 + ... + 149806.

Almost surely, 2^131442520 is an apocalyptic number.

131442520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131442520 is an abundant number, since it is smaller than the sum of its proper divisors (191190200).

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

131442520 is a wasteful number, since it uses less digits than its factorization.

131442520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298755 (or 298751 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 131442520 is about 11464.8384201436. The cubic root of 131442520 is about 508.4465352715.

Adding to 131442520 its reverse (25244131), we get a palindrome (156686651).

It can be divided in two parts, 1314 and 42520, that added together give a palindrome (43834).

The spelling of 131442520 in words is "one hundred thirty-one million, four hundred forty-two thousand, five hundred twenty".