3145240530 has 160 divisors (see below), whose sum is σ = 8799729840. Its totient is φ = 805109760.

The previous prime is 3145240477. The next prime is 3145240541. The reversal of 3145240530 is 350425413.

It can be written as a sum of positive squares in 8 ways, for example, as 2071433169 + 1073807361 = 45513^2 + 32769^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 3145240494 and 3145240503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6036670 + ... + 6037190.

Almost surely, 2^3145240530 is an apocalyptic number.

3145240530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3145240530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4399864920).

3145240530 is an abundant number, since it is smaller than the sum of its proper divisors (5654489310).

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

3145240530 is a wasteful number, since it uses less digits than its factorization.

3145240530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3145240530 is about 56082.4440444601. Note that the first 3 decimals coincide. The cubic root of 3145240530 is about 1465.1585410859.

Adding to 3145240530 its reverse (350425413), we get a palindrome (3495665943).

The spelling of 3145240530 in words is "three billion, one hundred forty-five million, two hundred forty thousand, five hundred thirty".