1213016506 has 16 divisors (see below), whose sum is σ = 2062620000. Its totient is φ = 530387568.

The previous prime is 1213016461. The next prime is 1213016507. The reversal of 1213016506 is 6056103121.

It is not an unprimeable number, because it can be changed into a prime (1213016507) 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, 1227256 + ... + 1228243.

It is an arithmetic number, because the mean of its divisors is an integer number (128913750).

Almost surely, 2^1213016506 is an apocalyptic number.

1213016506 is a deficient number, since it is larger than the sum of its proper divisors (849603494).

1213016506 is a wasteful number, since it uses less digits than its factorization.

1213016506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455533.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1213016506 is about 34828.3864972238. The cubic root of 1213016506 is about 1066.4870103459.

Adding to 1213016506 its reverse (6056103121), we get a palindrome (7269119627).

The spelling of 1213016506 in words is "one billion, two hundred thirteen million, sixteen thousand, five hundred six".