131022852609 has 32 divisors (see below), whose sum is σ = 200637135360. Its totient is φ = 75217939200.

The previous prime is 131022852607. The next prime is 131022852613. The reversal of 131022852609 is 906258220131.

It is not a de Polignac number, because 131022852609 - 2¹ = 131022852607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131022852601) 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, 7967854 + ... + 7984280.

It is an arithmetic number, because the mean of its divisors is an integer number (6269910480).

Almost surely, 2^131022852609 is an apocalyptic number.

131022852609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

131022852609 is a deficient number, since it is larger than the sum of its proper divisors (69614282751).

131022852609 is a wasteful number, since it uses less digits than its factorization.

131022852609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29181.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 131022852609 in words is "one hundred thirty-one billion, twenty-two million, eight hundred fifty-two thousand, six hundred nine".