131193556 has 96 divisors (see below), whose sum is σ = 281957760. Its totient is φ = 52752384.

The previous prime is 131193533. The next prime is 131193611. The reversal of 131193556 is 655391131.

It is a happy number.

131193556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1226055 + ... + 1226161.

It is an arithmetic number, because the mean of its divisors is an integer number (2937060).

Almost surely, 2^131193556 is an apocalyptic number.

It is an amenable number.

131193556 is an abundant number, since it is smaller than the sum of its proper divisors (150764204).

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

131193556 is a wasteful number, since it uses less digits than its factorization.

131193556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 231 counting only the distinct ones).

The product of its digits is 12150, while the sum is 34.

The square root of 131193556 is about 11453.9755543654. The cubic root of 131193556 is about 508.1253178337.

The spelling of 131193556 in words is "one hundred thirty-one million, one hundred ninety-three thousand, five hundred fifty-six".