1312203132 has 24 divisors (see below), whose sum is σ = 3402008400. Its totient is φ = 437401008.

The previous prime is 1312203131. The next prime is 1312203143. The reversal of 1312203132 is 2313022131.

1312203132 is a `hidden beast` number, since 131 + 220 + 313 + 2 = 666.

1312203132 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312203131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6074907 + ... + 6075122.

It is an arithmetic number, because the mean of its divisors is an integer number (141750350).

Almost surely, 2^1312203132 is an apocalyptic number.

1312203132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312203132 is an abundant number, since it is smaller than the sum of its proper divisors (2089805268).

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

1312203132 is a wasteful number, since it uses less digits than its factorization.

1312203132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150042 (or 12150034 counting only the distinct ones).

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

The square root of 1312203132 is about 36224.3444661184. The cubic root of 1312203132 is about 1094.7972302339.

Adding to 1312203132 its reverse (2313022131), we get a palindrome (3625225263).

The spelling of 1312203132 in words is "one billion, three hundred twelve million, two hundred three thousand, one hundred thirty-two".