131121153545013 has 6 divisors (see below), whose sum is σ = 189397221787254. Its totient is φ = 87414102363336.

The previous prime is 131121153544993. The next prime is 131121153545033. The reversal of 131121153545013 is 310545351121131.

131121153545013 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 115 + 35 + 4 + 501 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (131121153544993) and next prime (131121153545033).

It can be written as a sum of positive squares in only one way, i.e., 106006442259249 + 25114711285764 = 10295943^2 + 5011458^2 .

It is a de Polignac number, because none of the positive numbers 2^k-131121153545013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131121153545033) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7284508530270 + ... + 7284508530287.

It is an arithmetic number, because the mean of its divisors is an integer number (31566203631209).

Almost surely, 2^{131121153545013} is an apocalyptic number.

It is an amenable number.

131121153545013 is a deficient number, since it is larger than the sum of its proper divisors (58276068242241).

131121153545013 is a wasteful number, since it uses less digits than its factorization.

131121153545013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14569017060563 (or 14569017060560 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 131121153545013 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, one hundred fifty-three million, five hundred forty-five thousand, thirteen".