1231216100463 has 4 divisors (see below), whose sum is σ = 1641621467288. Its totient is φ = 820810733640.

The previous prime is 1231216100461. The next prime is 1231216100531. The reversal of 1231216100463 is 3640016121321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1231216100463 - 2¹ = 1231216100461 is a prime.

It is a super-2 number, since 2×1231216100463² (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 1231216100463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231216100461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205202683408 + ... + 205202683413.

It is an arithmetic number, because the mean of its divisors is an integer number (410405366822).

Almost surely, 2^{1231216100463} is an apocalyptic number.

1231216100463 is a deficient number, since it is larger than the sum of its proper divisors (410405366825).

1231216100463 is an equidigital number, since it uses as much as digits as its factorization.

1231216100463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410405366824.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 1231216100463 in words is "one trillion, two hundred thirty-one billion, two hundred sixteen million, one hundred thousand, four hundred sixty-three".