2431380 has 72 divisors (see below), whose sum is σ = 7928928. Its totient is φ = 555072.

The previous prime is 2431367. The next prime is 2431393. The reversal of 2431380 is 831342.

2431380 = T₄₉ + T₅₀ + ... + T₂₄₄.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2431367) and next prime (2431393).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2527 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (110124).

2^2431380 is an apocalyptic number.

2431380 is a gapful number since it is divisible by the number (20) 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 2431380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3964464).

2431380 is an abundant number, since it is smaller than the sum of its proper divisors (5497548).

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

2431380 is a wasteful number, since it uses less digits than its factorization.

2431380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2431380 is about 1559.2882991929. The cubic root of 2431380 is about 134.4675875334.

The spelling of 2431380 in words is "two million, four hundred thirty-one thousand, three hundred eighty".