131020431235 has 8 divisors (see below), whose sum is σ = 157232316240. Its totient is φ = 104811145824.

The previous prime is 131020431169. The next prime is 131020431299. The reversal of 131020431235 is 532134020131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131020431235 - 2¹³ = 131020423043 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537240 + ... + 742069.

It is an arithmetic number, because the mean of its divisors is an integer number (19654039530).

Almost surely, 2^131020431235 is an apocalyptic number.

131020431235 is a deficient number, since it is larger than the sum of its proper divisors (26211885005).

131020431235 is a wasteful number, since it uses less digits than its factorization.

131020431235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299797.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 131020431235 its reverse (532134020131), we get a palindrome (663154451366).

The spelling of 131020431235 in words is "one hundred thirty-one billion, twenty million, four hundred thirty-one thousand, two hundred thirty-five".