1212313032 has 144 divisors (see below), whose sum is σ = 3878896320. Its totient is φ = 335067840.

The previous prime is 1212313009. The next prime is 1212313033. The reversal of 1212313032 is 2303132121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212312996 and 1212313014.

It is not an unprimeable number, because it can be changed into a prime (1212313033) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 483093 + ... + 485595.

It is an arithmetic number, because the mean of its divisors is an integer number (26936780).

Almost surely, 2^1212313032 is an apocalyptic number.

1212313032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212313032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939448160).

1212313032 is an abundant number, since it is smaller than the sum of its proper divisors (2666583288).

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

1212313032 is a wasteful number, since it uses less digits than its factorization.

1212313032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1212313032 is about 34818.2858854367. The cubic root of 1212313032 is about 1066.2808051381.

Adding to 1212313032 its reverse (2303132121), we get a palindrome (3515445153).

The spelling of 1212313032 in words is "one billion, two hundred twelve million, three hundred thirteen thousand, thirty-two".