1213113104 has 80 divisors (see below), whose sum is σ = 2811629568. Its totient is φ = 495766656.

The previous prime is 1213113103. The next prime is 1213113107. The reversal of 1213113104 is 4013113121.

It is not an unprimeable number, because it can be changed into a prime (1213113103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254029 + ... + 1254995.

Almost surely, 2^1213113104 is an apocalyptic number.

1213113104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213113104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405814784).

1213113104 is an abundant number, since it is smaller than the sum of its proper divisors (1598516464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213113104 is a wasteful number, since it uses less digits than its factorization.

1213113104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1213113104 is about 34829.7732407204. The cubic root of 1213113104 is about 1066.5153193252.

Adding to 1213113104 its sum of digits (17), we get a palindrome (1213113121).

Adding to 1213113104 its reverse (4013113121), we get a palindrome (5226226225).

The spelling of 1213113104 in words is "one billion, two hundred thirteen million, one hundred thirteen thousand, one hundred four".