131601121526 has 24 divisors (see below), whose sum is σ = 229650592320. Its totient is φ = 56395552752.

The previous prime is 131601121511. The next prime is 131601121541. The reversal of 131601121526 is 625121106131.

It is an interprime number because it is at equal distance from previous prime (131601121511) and next prime (131601121541).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1207355 + ... + 1311833.

It is an arithmetic number, because the mean of its divisors is an integer number (9568774680).

Almost surely, 2^131601121526 is an apocalyptic number.

131601121526 is a deficient number, since it is larger than the sum of its proper divisors (98049470794).

131601121526 is a wasteful number, since it uses less digits than its factorization.

131601121526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117348 (or 117341 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

Adding to 131601121526 its reverse (625121106131), we get a palindrome (756722227657).

The spelling of 131601121526 in words is "one hundred thirty-one billion, six hundred one million, one hundred twenty-one thousand, five hundred twenty-six".