131363388 has 72 divisors (see below), whose sum is σ = 369969600. Its totient is φ = 39021696.

The previous prime is 131363371. The next prime is 131363423. The reversal of 131363388 is 883363131.

131363388 is a `hidden beast` number, since 1 + 3 + 13 + 633 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8733 + ... + 18411.

Almost surely, 2^131363388 is an apocalyptic number.

131363388 is a gapful number since it is divisible by the number (18) 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 131363388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184984800).

131363388 is an abundant number, since it is smaller than the sum of its proper divisors (238606212).

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

131363388 is a wasteful number, since it uses less digits than its factorization.

131363388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9731 (or 9726 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 131363388 is about 11461.3868270816. The cubic root of 131363388 is about 508.3444818720.

The spelling of 131363388 in words is "one hundred thirty-one million, three hundred sixty-three thousand, three hundred eighty-eight".