1213833020 has 12 divisors (see below), whose sum is σ = 2549049384. Its totient is φ = 485533200.

The previous prime is 1213833017. The next prime is 1213833029. The reversal of 1213833020 is 203383121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213833029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30345806 + ... + 30345845.

It is an arithmetic number, because the mean of its divisors is an integer number (212420782).

Almost surely, 2^1213833020 is an apocalyptic number.

1213833020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213833020 is an abundant number, since it is smaller than the sum of its proper divisors (1335216364).

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

1213833020 is a wasteful number, since it uses less digits than its factorization.

1213833020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60691660 (or 60691658 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1213833020 is about 34840.1064866340. The cubic root of 1213833020 is about 1066.7262503608.

The spelling of 1213833020 in words is "one billion, two hundred thirteen million, eight hundred thirty-three thousand, twenty".