131493208 has 64 divisors (see below), whose sum is σ = 320785920. Its totient is φ = 48998400.

The previous prime is 131493157. The next prime is 131493211. The reversal of 131493208 is 802394131.

It is a self number, because there is not a number n which added to its sum of digits gives 131493208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9528 + ... + 18808.

It is an arithmetic number, because the mean of its divisors is an integer number (5012280).

Almost surely, 2^131493208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131493208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160392960).

131493208 is an abundant number, since it is smaller than the sum of its proper divisors (189292712).

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

131493208 is a wasteful number, since it uses less digits than its factorization.

131493208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328 (or 9324 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 131493208 is about 11467.0487920825. The cubic root of 131493208 is about 508.5118840537.

The spelling of 131493208 in words is "one hundred thirty-one million, four hundred ninety-three thousand, two hundred eight".