131621352 has 32 divisors (see below), whose sum is σ = 329337600. Its totient is φ = 43835904.

The previous prime is 131621339. The next prime is 131621353. The reversal of 131621352 is 253126131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (131621353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47049 + ... + 49767.

It is an arithmetic number, because the mean of its divisors is an integer number (10291800).

Almost surely, 2^131621352 is an apocalyptic number.

131621352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131621352 is an abundant number, since it is smaller than the sum of its proper divisors (197716248).

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

131621352 is a wasteful number, since it uses less digits than its factorization.

131621352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745 (or 4741 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 131621352 is about 11472.6349196686. The cubic root of 131621352 is about 508.6770170205.

Adding to 131621352 its reverse (253126131), we get a palindrome (384747483).

The spelling of 131621352 in words is "one hundred thirty-one million, six hundred twenty-one thousand, three hundred fifty-two".