131556022 has 12 divisors (see below), whose sum is σ = 213681780. Its totient is φ = 60718008.

The previous prime is 131556011. The next prime is 131556023. The reversal of 131556022 is 220655131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131556023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194272 + ... + 194947.

It is an arithmetic number, because the mean of its divisors is an integer number (17806815).

Almost surely, 2^131556022 is an apocalyptic number.

131556022 is a deficient number, since it is larger than the sum of its proper divisors (82125758).

131556022 is a wasteful number, since it uses less digits than its factorization.

131556022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389247 (or 389234 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 131556022 is about 11469.7873563550. The cubic root of 131556022 is about 508.5928428124.

The spelling of 131556022 in words is "one hundred thirty-one million, five hundred fifty-six thousand, twenty-two".