1213112032 has 24 divisors (see below), whose sum is σ = 2605434552. Its totient is φ = 551414400.

The previous prime is 1213112011. The next prime is 1213112041. The reversal of 1213112032 is 2302113121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1213111997 and 1213112015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722819 + ... + 1723522.

It is an arithmetic number, because the mean of its divisors is an integer number (108559773).

Almost surely, 2^1213112032 is an apocalyptic number.

It is an amenable number.

1213112032 is an abundant number, since it is smaller than the sum of its proper divisors (1392322520).

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

1213112032 is a wasteful number, since it uses less digits than its factorization.

1213112032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446362 (or 3446354 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1213112032 is about 34829.7578515843. The cubic root of 1213112032 is about 1066.5150051735.

Adding to 1213112032 its reverse (2302113121), we get a palindrome (3515225153).

The spelling of 1213112032 in words is "one billion, two hundred thirteen million, one hundred twelve thousand, thirty-two".