3145432440 has 32 divisors (see below), whose sum is σ = 9436297680. Its totient is φ = 838781952.

The previous prime is 3145432417. The next prime is 3145432447. The reversal of 3145432440 is 442345413.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3145432398 and 3145432407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145432447) 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, 13105849 + ... + 13106088.

Almost surely, 2^3145432440 is an apocalyptic number.

3145432440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3145432440 is an abundant number, since it is smaller than the sum of its proper divisors (6290865240).

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

3145432440 is a wasteful number, since it uses less digits than its factorization.

3145432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26211951 (or 26211947 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 3145432440 is about 56084.1549815989. The cubic root of 3145432440 is about 1465.1883398516.

Adding to 3145432440 its reverse (442345413), we get a palindrome (3587777853).

The spelling of 3145432440 in words is "three billion, one hundred forty-five million, four hundred thirty-two thousand, four hundred forty".