1213013013 has 4 divisors (see below), whose sum is σ = 1617350688. Its totient is φ = 808675340.

The previous prime is 1213012979. The next prime is 1213013059. The reversal of 1213013013 is 3103103121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1213013013 - 2¹² = 1213008917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213012983 and 1213013001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213013063) 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, 202168833 + ... + 202168838.

It is an arithmetic number, because the mean of its divisors is an integer number (404337672).

Almost surely, 2^1213013013 is an apocalyptic number.

It is an amenable number.

1213013013 is a deficient number, since it is larger than the sum of its proper divisors (404337675).

1213013013 is an equidigital number, since it uses as much as digits as its factorization.

1213013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404337674.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1213013013 is about 34828.3363513103. The cubic root of 1213013013 is about 1066.4859866602.

Adding to 1213013013 its reverse (3103103121), we get a palindrome (4316116134).

The spelling of 1213013013 in words is "one billion, two hundred thirteen million, thirteen thousand, thirteen".