12351432 has 16 divisors (see below), whose sum is σ = 30878640. Its totient is φ = 4117136.

The previous prime is 12351431. The next prime is 12351433. The reversal of 12351432 is 23415321.

It is an interprime number because it is at equal distance from previous prime (12351431) and next prime (12351433).

It is a junction number, because it is equal to n+sod(n) for n = 12351399 and 12351408.

It is not an unprimeable number, because it can be changed into a prime (12351431) 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, 257298 + ... + 257345.

It is an arithmetic number, because the mean of its divisors is an integer number (1929915).

Almost surely, 2^12351432 is an apocalyptic number.

12351432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12351432 is an abundant number, since it is smaller than the sum of its proper divisors (18527208).

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

12351432 is a wasteful number, since it uses less digits than its factorization.

12351432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514652 (or 514648 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 12351432 is about 3514.4604137762. The cubic root of 12351432 is about 231.1563192983.

Adding to 12351432 its reverse (23415321), we get a palindrome (35766753).

The spelling of 12351432 in words is "twelve million, three hundred fifty-one thousand, four hundred thirty-two".