131263020 has 144 divisors (see below), whose sum is σ = 479082240. Its totient is φ = 28418688.

The previous prime is 131262997. The next prime is 131263049. The reversal of 131263020 is 20362131.

131263020 is a `hidden beast` number, since 1 + 3 + 12 + 630 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131262984 and 131263002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21199 + ... + 26681.

It is an arithmetic number, because the mean of its divisors is an integer number (3326960).

Almost surely, 2^131263020 is an apocalyptic number.

131263020 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 131263020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239541120).

131263020 is an abundant number, since it is smaller than the sum of its proper divisors (347819220).

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

131263020 is a wasteful number, since it uses less digits than its factorization.

131263020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131263020 is about 11457.0074626841. The cubic root of 131263020 is about 508.2149822716.

The spelling of 131263020 in words is "one hundred thirty-one million, two hundred sixty-three thousand, twenty".