3141781128 has 64 divisors (see below), whose sum is σ = 8940052800. Its totient is φ = 1021714560.

The previous prime is 3141781127. The next prime is 3141781177. The reversal of 3141781128 is 8211871413.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3141781092 and 3141781101.

It is not an unprimeable number, because it can be changed into a prime (3141781121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168526 + ... + 186237.

It is an arithmetic number, because the mean of its divisors is an integer number (139688325).

Almost surely, 2^3141781128 is an apocalyptic number.

It is an amenable number.

3141781128 is an abundant number, since it is smaller than the sum of its proper divisors (5798271672).

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

3141781128 is a wasteful number, since it uses less digits than its factorization.

3141781128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354819 (or 354809 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 3141781128 is about 56051.5934474659. The cubic root of 3141781128 is about 1464.6211755271.

The spelling of 3141781128 in words is "three billion, one hundred forty-one million, seven hundred eighty-one thousand, one hundred twenty-eight".