3128253137 has 8 divisors (see below), whose sum is σ = 3206620872. Its totient is φ = 3049984000.

The previous prime is 3128253133. The next prime is 3128253169. The reversal of 3128253137 is 7313528213.

It can be written as a sum of positive squares in 4 ways, for example, as 1031437456 + 2096815681 = 32116^2 + 45791^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3128253137 - 2² = 3128253133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3128253097 and 3128253106.

It is not an unprimeable number, because it can be changed into a prime (3128253133) 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, 41813 + ... + 89469.

It is an arithmetic number, because the mean of its divisors is an integer number (400827609).

Almost surely, 2^3128253137 is an apocalyptic number.

It is an amenable number.

3128253137 is a deficient number, since it is larger than the sum of its proper divisors (78367735).

3128253137 is a wasteful number, since it uses less digits than its factorization.

3128253137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49299.

The product of its digits is 30240, while the sum is 35.

The square root of 3128253137 is about 55930.7888108151. The cubic root of 3128253137 is about 1462.5160121168.

The spelling of 3128253137 in words is "three billion, one hundred twenty-eight million, two hundred fifty-three thousand, one hundred thirty-seven".