1213017084 has 36 divisors (see below), whose sum is σ = 3067331904. Its totient is φ = 404194752.

The previous prime is 1213017083. The next prime is 1213017097. The reversal of 1213017084 is 4807103121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213017083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156304 + ... + 163880.

It is an arithmetic number, because the mean of its divisors is an integer number (85203664).

Almost surely, 2^1213017084 is an apocalyptic number.

It is an amenable number.

1213017084 is an abundant number, since it is smaller than the sum of its proper divisors (1854314820).

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

1213017084 is a wasteful number, since it uses less digits than its factorization.

1213017084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12034 (or 12029 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1213017084 is about 34828.3947950519. The cubic root of 1213017084 is about 1066.4871797388.

The spelling of 1213017084 in words is "one billion, two hundred thirteen million, seventeen thousand, eighty-four".