3128573231 has 32 divisors (see below), whose sum is σ = 3865804800. Its totient is φ = 2472029280.

The previous prime is 3128573209. The next prime is 3128573243. The reversal of 3128573231 is 1323758213.

It is a de Polignac number, because none of the positive numbers 2^k-3128573231 is a prime.

It is a super-2 number, since 2×3128573231² = 19575940923459558722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3128573191 and 3128573200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128573251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1777730 + ... + 1779488.

It is an arithmetic number, because the mean of its divisors is an integer number (120806400).

Almost surely, 2^3128573231 is an apocalyptic number.

3128573231 is a deficient number, since it is larger than the sum of its proper divisors (737231569).

3128573231 is a wasteful number, since it uses less digits than its factorization.

3128573231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

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

The square root of 3128573231 is about 55933.6502563528. The cubic root of 3128573231 is about 1462.5658936975.

The spelling of 3128573231 in words is "three billion, one hundred twenty-eight million, five hundred seventy-three thousand, two hundred thirty-one".