131865453811 has 32 divisors (see below), whose sum is σ = 165129875456. Its totient is φ = 102514896000.

The previous prime is 131865453809. The next prime is 131865453829. The reversal of 131865453811 is 118354568131.

It is a cyclic number.

It is not a de Polignac number, because 131865453811 - 2¹ = 131865453809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131865453871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5489056 + ... + 5513026.

It is an arithmetic number, because the mean of its divisors is an integer number (5160308608).

Almost surely, 2^131865453811 is an apocalyptic number.

131865453811 is a deficient number, since it is larger than the sum of its proper divisors (33264421645).

131865453811 is a wasteful number, since it uses less digits than its factorization.

131865453811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25043.

The product of its digits is 345600, while the sum is 46.

The spelling of 131865453811 in words is "one hundred thirty-one billion, eight hundred sixty-five million, four hundred fifty-three thousand, eight hundred eleven".