131235304135 has 24 divisors (see below), whose sum is σ = 175646278080. Its totient is φ = 93570384768.

The previous prime is 131235304127. The next prime is 131235304177. The reversal of 131235304135 is 531403532131.

It is a happy number.

It is not a de Polignac number, because 131235304135 - 2³ = 131235304127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131235304097 and 131235304106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1145695 + ... + 1255024.

It is an arithmetic number, because the mean of its divisors is an integer number (7318594920).

Almost surely, 2^131235304135 is an apocalyptic number.

131235304135 is a deficient number, since it is larger than the sum of its proper divisors (44410973945).

131235304135 is a wasteful number, since it uses less digits than its factorization.

131235304135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400795 (or 2400766 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 131235304135 its reverse (531403532131), we get a palindrome (662638836266).

The spelling of 131235304135 in words is "one hundred thirty-one billion, two hundred thirty-five million, three hundred four thousand, one hundred thirty-five".