1283213384 has 8 divisors (see below), whose sum is σ = 2406025110. Its totient is φ = 641606688.

The previous prime is 1283213381. The next prime is 1283213419. The reversal of 1283213384 is 4833123821.

It can be written as a sum of positive squares in only one way, i.e., 1223460484 + 59752900 = 34978^2 + 7730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1283213381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80200829 + ... + 80200844.

Almost surely, 2^1283213384 is an apocalyptic number.

It is an amenable number.

1283213384 is a deficient number, since it is larger than the sum of its proper divisors (1122811726).

1283213384 is a wasteful number, since it uses less digits than its factorization.

1283213384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160401679 (or 160401675 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 1283213384 is about 35821.9678968088. The cubic root of 1283213384 is about 1086.6748775940.

The spelling of 1283213384 in words is "one billion, two hundred eighty-three million, two hundred thirteen thousand, three hundred eighty-four".