131123232198 has 48 divisors (see below), whose sum is σ = 325168754976. Its totient is φ = 37408089600.

The previous prime is 131123232187. The next prime is 131123232221. The reversal of 131123232198 is 891232321131.

It is a happy number.

131123232198 is a `hidden beast` number, since 1 + 3 + 11 + 232 + 321 + 98 = 666.

It is a super-2 number, since 2×131123232198² (a number of 23 digits) contains 22 as substring.

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, 688353 + ... + 857948.

It is an arithmetic number, because the mean of its divisors is an integer number (6774349062).

Almost surely, 2^131123232198 is an apocalyptic number.

131123232198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131123232198 is an abundant number, since it is smaller than the sum of its proper divisors (194045522778).

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

131123232198 is a wasteful number, since it uses less digits than its factorization.

131123232198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546989 (or 1546986 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The spelling of 131123232198 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred ninety-eight".