1213496771 has 8 divisors (see below), whose sum is σ = 1285449264. Its totient is φ = 1141607680.

The previous prime is 1213496747. The next prime is 1213496777. The reversal of 1213496771 is 1776943121.

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 1213496771 - 2¹⁰ = 1213495747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213496777) 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, 26876 + ... + 56118.

It is an arithmetic number, because the mean of its divisors is an integer number (160681158).

Almost surely, 2^1213496771 is an apocalyptic number.

1213496771 is a deficient number, since it is larger than the sum of its proper divisors (71952493).

1213496771 is a wasteful number, since it uses less digits than its factorization.

1213496771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31701.

The product of its digits is 63504, while the sum is 41.

The square root of 1213496771 is about 34835.2805500401. The cubic root of 1213496771 is about 1066.6277418196.

The spelling of 1213496771 in words is "one billion, two hundred thirteen million, four hundred ninety-six thousand, seven hundred seventy-one".