1213713139 has 8 divisors (see below), whose sum is σ = 1220844800. Its totient is φ = 1206592200.

The previous prime is 1213713073. The next prime is 1213713143. The reversal of 1213713139 is 9313173121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213713139 is a prime.

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 1213713139.

It is not an unprimeable number, because it can be changed into a prime (1213713239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362704 + ... + 366034.

It is an arithmetic number, because the mean of its divisors is an integer number (152605600).

Almost surely, 2^1213713139 is an apocalyptic number.

1213713139 is a deficient number, since it is larger than the sum of its proper divisors (7131661).

1213713139 is a wasteful number, since it uses less digits than its factorization.

1213713139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361.

The product of its digits is 3402, while the sum is 31.

The square root of 1213713139 is about 34838.3859987801. The cubic root of 1213713139 is about 1066.6911317414.

The spelling of 1213713139 in words is "one billion, two hundred thirteen million, seven hundred thirteen thousand, one hundred thirty-nine".