131020135 has 8 divisors (see below), whose sum is σ = 157396896. Its totient is φ = 104700960.

The previous prime is 131020117. The next prime is 131020151. The reversal of 131020135 is 531020131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131020135 - 2⁵ = 131020103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9219 + ... + 18628.

It is an arithmetic number, because the mean of its divisors is an integer number (19674612).

Almost surely, 2^131020135 is an apocalyptic number.

131020135 is a deficient number, since it is larger than the sum of its proper divisors (26376761).

131020135 is an equidigital number, since it uses as much as digits as its factorization.

131020135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28793.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 131020135 is about 11446.4027100220. The cubic root of 131020135 is about 507.9013270129.

Adding to 131020135 its reverse (531020131), we get a palindrome (662040266).

The spelling of 131020135 in words is "one hundred thirty-one million, twenty thousand, one hundred thirty-five".