12431000 has 64 divisors (see below), whose sum is σ = 30101760. Its totient is φ = 4800000.

The previous prime is 12430963. The next prime is 12431033. The reversal of 12431000 is 13421.

12431000 = T₈₈₀ + T₈₈₁ + ... + T₉₁₀.

It is a happy number.

It is a super-2 number, since 2×12431000² = 309059522000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30800 + ... + 31200.

It is an arithmetic number, because the mean of its divisors is an integer number (470340).

Almost surely, 2^12431000 is an apocalyptic number.

12431000 is a gapful number since it is divisible by the number (10) 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 12431000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15050880).

12431000 is an abundant number, since it is smaller than the sum of its proper divisors (17670760).

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

12431000 is a wasteful number, since it uses less digits than its factorization.

12431000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12431000 is about 3525.7623289155. The cubic root of 12431000 is about 231.6516273613.

Adding to 12431000 its reverse (13421), we get a palindrome (12444421).

The spelling of 12431000 in words is "twelve million, four hundred thirty-one thousand".