3145234440 has 64 divisors (see below), whose sum is σ = 9761083200. Its totient is φ = 809806592.

The previous prime is 3145234439. The next prime is 3145234523. The reversal of 3145234440 is 444325413.

It is a super-2 number, since 2×3145234440² = 19784999365124227200, which contains 22 as substring.

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 = 3145234398 and 3145234407.

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, 448422 + ... + 455381.

It is an arithmetic number, because the mean of its divisors is an integer number (152516925).

Almost surely, 2^3145234440 is an apocalyptic number.

3145234440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3145234440 is an abundant number, since it is smaller than the sum of its proper divisors (6615848760).

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

3145234440 is a wasteful number, since it uses less digits than its factorization.

3145234440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903846 (or 903842 counting only the distinct ones).

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

The square root of 3145234440 is about 56082.3897493678. The cubic root of 3145234440 is about 1465.1575954432.

Adding to 3145234440 its reverse (444325413), we get a palindrome (3589559853).

The spelling of 3145234440 in words is "three billion, one hundred forty-five million, two hundred thirty-four thousand, four hundred forty".