131022120208 has 160 divisors (see below), whose sum is σ = 301653192960. Its totient is φ = 53962536960.

The previous prime is 131022120191. The next prime is 131022120209. The reversal of 131022120208 is 802021220131.

It is not an unprimeable number, because it can be changed into a prime (131022120209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128326738 + ... + 128327758.

It is an arithmetic number, because the mean of its divisors is an integer number (1885332456).

Almost surely, 2^131022120208 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 131022120208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150826596480).

131022120208 is an abundant number, since it is smaller than the sum of its proper divisors (170631072752).

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

131022120208 is a wasteful number, since it uses less digits than its factorization.

131022120208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 131022120208 its reverse (802021220131), we get a palindrome (933043340339).

The spelling of 131022120208 in words is "one hundred thirty-one billion, twenty-two million, one hundred twenty thousand, two hundred eight".