3181378130 has 64 divisors (see below), whose sum is σ = 6966300672. Its totient is φ = 1021148160.

The previous prime is 3181378129. The next prime is 3181378133. The reversal of 3181378130 is 318731813.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (3181378133) 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, 220292 + ... + 234288.

It is an arithmetic number, because the mean of its divisors is an integer number (108848448).

Almost surely, 2^3181378130 is an apocalyptic number.

3181378130 is an abundant number, since it is smaller than the sum of its proper divisors (3784922542).

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

3181378130 is a wasteful number, since it uses less digits than its factorization.

3181378130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14219.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 3181378130 is about 56403.7067044357. The cubic root of 3181378130 is about 1470.7485551551.

The spelling of 3181378130 in words is "three billion, one hundred eighty-one million, three hundred seventy-eight thousand, one hundred thirty".