131958301985 has 4 divisors (see below), whose sum is σ = 158349962388. Its totient is φ = 105566641584.

The previous prime is 131958301967. The next prime is 131958302057. The reversal of 131958301985 is 589103859131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589103859131 = 83 ⋅7097636857.

It can be written as a sum of positive squares in 2 ways, for example, as 89813496721 + 42144805264 = 299689^2 + 205292^2 .

It is a cyclic number.

It is not a de Polignac number, because 131958301985 - 2⁸ = 131958301729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13195830194 + ... + 13195830203.

It is an arithmetic number, because the mean of its divisors is an integer number (39587490597).

Almost surely, 2^131958301985 is an apocalyptic number.

It is an amenable number.

131958301985 is a deficient number, since it is larger than the sum of its proper divisors (26391660403).

131958301985 is an equidigital number, since it uses as much as digits as its factorization.

131958301985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26391660402.

The product of its (nonzero) digits is 1166400, while the sum is 53.

The spelling of 131958301985 in words is "one hundred thirty-one billion, nine hundred fifty-eight million, three hundred one thousand, nine hundred eighty-five".