131563420 has 12 divisors (see below), whose sum is σ = 276283224. Its totient is φ = 52625360.

The previous prime is 131563417. The next prime is 131563433. The reversal of 131563420 is 24365131.

It is a super-3 number, since 3×131563420³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3289066 + ... + 3289105.

It is an arithmetic number, because the mean of its divisors is an integer number (23023602).

Almost surely, 2^131563420 is an apocalyptic number.

131563420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131563420 is an abundant number, since it is smaller than the sum of its proper divisors (144719804).

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

131563420 is a wasteful number, since it uses less digits than its factorization.

131563420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578180 (or 6578178 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 131563420 is about 11470.1098512612. The cubic root of 131563420 is about 508.6023761384.

The spelling of 131563420 in words is "one hundred thirty-one million, five hundred sixty-three thousand, four hundred twenty".