13231032312 has 32 divisors (see below), whose sum is σ = 33206302800. Its totient is φ = 4393181184.

The previous prime is 13231032277. The next prime is 13231032319. The reversal of 13231032312 is 21323013231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231032319) 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, 1066387 + ... + 1078722.

Almost surely, 2^13231032312 is an apocalyptic number.

13231032312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13231032312 is an abundant number, since it is smaller than the sum of its proper divisors (19975270488).

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

13231032312 is a wasteful number, since it uses less digits than its factorization.

13231032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145375 (or 2145371 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13231032312 its reverse (21323013231), we get a palindrome (34554045543).

The spelling of 13231032312 in words is "thirteen billion, two hundred thirty-one million, thirty-two thousand, three hundred twelve".