131452220 has 24 divisors (see below), whose sum is σ = 276318000. Its totient is φ = 52529792.

The previous prime is 131452219. The next prime is 131452253. The reversal of 131452220 is 22254131.

It is a super-2 number, since 2×131452220² = 34559372285856800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131452192 and 131452201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23231 + ... + 28329.

It is an arithmetic number, because the mean of its divisors is an integer number (11513250).

Almost surely, 2^131452220 is an apocalyptic number.

131452220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131452220 is an abundant number, since it is smaller than the sum of its proper divisors (144865780).

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

131452220 is a wasteful number, since it uses less digits than its factorization.

131452220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6397 (or 6395 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 131452220 is about 11465.2614449039. The cubic root of 131452220 is about 508.4590421581.

The spelling of 131452220 in words is "one hundred thirty-one million, four hundred fifty-two thousand, two hundred twenty".