1213023104 has 16 divisors (see below), whose sum is σ = 2416569720. Its totient is φ = 606511488.

The previous prime is 1213023079. The next prime is 1213023109. The reversal of 1213023104 is 4013203121.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213023109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4738244 + ... + 4738499.

Almost surely, 2^1213023104 is an apocalyptic number.

It is an amenable number.

1213023104 is a deficient number, since it is larger than the sum of its proper divisors (1203546616).

1213023104 is an frugal number, since it uses more digits than its factorization.

1213023104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476757 (or 9476745 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1213023104 is about 34828.4812186808. The cubic root of 1213023104 is about 1066.4889440015.

Adding to 1213023104 its reverse (4013203121), we get a palindrome (5226226225).

The spelling of 1213023104 in words is "one billion, two hundred thirteen million, twenty-three thousand, one hundred four".