131020121035 has 8 divisors (see below), whose sum is σ = 157248089856. Its totient is φ = 104800133760.

The previous prime is 131020121033. The next prime is 131020121047. The reversal of 131020121035 is 530121020131.

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

It is not a de Polignac number, because 131020121035 - 2¹ = 131020121033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131020121033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959211 + ... + 2024980.

It is an arithmetic number, because the mean of its divisors is an integer number (19656011232).

Almost surely, 2^131020121035 is an apocalyptic number.

131020121035 is a deficient number, since it is larger than the sum of its proper divisors (26227968821).

131020121035 is an equidigital number, since it uses as much as digits as its factorization.

131020121035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990773.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 131020121035 its reverse (530121020131), we get a palindrome (661141141166).

The spelling of 131020121035 in words is "one hundred thirty-one billion, twenty million, one hundred twenty-one thousand, thirty-five".