131531162135 has 16 divisors (see below), whose sum is σ = 164281811040. Its totient is φ = 100973174400.

The previous prime is 131531162107. The next prime is 131531162143. The reversal of 131531162135 is 531261135131.

It is not a de Polignac number, because 131531162135 - 2¹⁸ = 131530899991 is a prime.

It is a super-2 number, since 2×131531162135² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2758916 + ... + 2806185.

It is an arithmetic number, because the mean of its divisors is an integer number (10267613190).

Almost surely, 2^131531162135 is an apocalyptic number.

131531162135 is a deficient number, since it is larger than the sum of its proper divisors (32750648905).

131531162135 is a wasteful number, since it uses less digits than its factorization.

131531162135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565298.

The product of its digits is 8100, while the sum is 32.

Adding to 131531162135 its reverse (531261135131), we get a palindrome (662792297266).

The spelling of 131531162135 in words is "one hundred thirty-one billion, five hundred thirty-one million, one hundred sixty-two thousand, one hundred thirty-five".