12431130 has 64 divisors (see below), whose sum is σ = 31847040. Its totient is φ = 3096576.

The previous prime is 12431117. The next prime is 12431143. The reversal of 12431130 is 3113421.

12431130 = T₂₇₈ + T₂₇₉ + ... + T₄₅₇.

It is an interprime number because it is at equal distance from previous prime (12431117) and next prime (12431143).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64314 + ... + 64506.

It is an arithmetic number, because the mean of its divisors is an integer number (497610).

Almost surely, 2^12431130 is an apocalyptic number.

12431130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12431130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15923520).

12431130 is an abundant number, since it is smaller than the sum of its proper divisors (19415910).

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

12431130 is a wasteful number, since it uses less digits than its factorization.

12431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12431130 is about 3525.7807645967. The cubic root of 12431130 is about 231.6524348750.

Adding to 12431130 its reverse (3113421), we get a palindrome (15544551).

It can be divided in two parts, 12431 and 130, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 12431130 in words is "twelve million, four hundred thirty-one thousand, one hundred thirty".