1231541284163 has 8 divisors (see below), whose sum is σ = 1242667693248. Its totient is φ = 1220458423464.

The previous prime is 1231541284153. The next prime is 1231541284189. The reversal of 1231541284163 is 3614821451321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231541284163 - 2⁴⁰ = 132029656387 is a prime.

It is a super-2 number, since 2×1231541284163² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231541284163.

It is not an unprimeable number, because it can be changed into a prime (1231541284123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10830281 + ... + 10943402.

It is an arithmetic number, because the mean of its divisors is an integer number (155333461656).

Almost surely, 2^{1231541284163} is an apocalyptic number.

1231541284163 is a deficient number, since it is larger than the sum of its proper divisors (11126409085).

1231541284163 is a wasteful number, since it uses less digits than its factorization.

1231541284163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21774193.

The product of its digits is 138240, while the sum is 41.

The spelling of 1231541284163 in words is "one trillion, two hundred thirty-one billion, five hundred forty-one million, two hundred eighty-four thousand, one hundred sixty-three".