131423402501505 has 48 divisors (see below), whose sum is σ = 232677267413760. Its totient is φ = 68592340422144.

The previous prime is 131423402501483. The next prime is 131423402501557. The reversal of 131423402501505 is 505105204324131.

131423402501505 is a `hidden beast` number, since 1 + 3 + 14 + 2 + 340 + 250 + 1 + 50 + 5 = 666.

It is not a de Polignac number, because 131423402501505 - 2⁸ = 131423402501249 is a prime.

It is a super-2 number, since 2×131423402501505² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131423402501505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12495366 + ... + 20469024.

It is an arithmetic number, because the mean of its divisors is an integer number (4847443071120).

Almost surely, 2^{131423402501505} is an apocalyptic number.

131423402501505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131423402501505 is a deficient number, since it is larger than the sum of its proper divisors (101253864912255).

131423402501505 is a wasteful number, since it uses less digits than its factorization.

131423402501505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7981510 (or 7981507 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 131423402501505 its reverse (505105204324131), we get a palindrome (636528606825636).

The spelling of 131423402501505 in words is "one hundred thirty-one trillion, four hundred twenty-three billion, four hundred two million, five hundred one thousand, five hundred five".