1213040163 has 8 divisors (see below), whose sum is σ = 1623103168. Its totient is φ = 805835304.

The previous prime is 1213040131. The next prime is 1213040201. The reversal of 1213040163 is 3610403121.

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

It is not a de Polignac number, because 1213040163 - 2⁵ = 1213040131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213040663) 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, 713545 + ... + 715242.

It is an arithmetic number, because the mean of its divisors is an integer number (202887896).

Almost surely, 2^1213040163 is an apocalyptic number.

1213040163 is a deficient number, since it is larger than the sum of its proper divisors (410063005).

1213040163 is a wasteful number, since it uses less digits than its factorization.

1213040163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429073.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1213040163 is about 34828.7261179619. The cubic root of 1213040163 is about 1066.4939433978.

Adding to 1213040163 its reverse (3610403121), we get a palindrome (4823443284).

The spelling of 1213040163 in words is "one billion, two hundred thirteen million, forty thousand, one hundred sixty-three".