1216313063 has 16 divisors (see below), whose sum is σ = 1465067520. Its totient is φ = 986445216.

The previous prime is 1216313051. The next prime is 1216313107. The reversal of 1216313063 is 3603136121.

It is a cyclic number.

It is not a de Polignac number, because 1216313063 - 2²⁰ = 1215264487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216313023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109481 + ... + 120077.

It is an arithmetic number, because the mean of its divisors is an integer number (91566720).

Almost surely, 2^1216313063 is an apocalyptic number.

1216313063 is a deficient number, since it is larger than the sum of its proper divisors (248754457).

1216313063 is a wasteful number, since it uses less digits than its factorization.

1216313063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1216313063 is about 34875.6801080638. The cubic root of 1216313063 is about 1067.4522500749.

Adding to 1216313063 its reverse (3603136121), we get a palindrome (4819449184).

The spelling of 1216313063 in words is "one billion, two hundred sixteen million, three hundred thirteen thousand, sixty-three".