3131904345 has 8 divisors (see below), whose sum is σ = 5011046976. Its totient is φ = 1670348976.

The previous prime is 3131904343. The next prime is 3131904353. The reversal of 3131904345 is 5434091313.

It is a happy number.

3131904345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3131904345 - 2¹ = 3131904343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3131904343) 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, 104396797 + ... + 104396826.

It is an arithmetic number, because the mean of its divisors is an integer number (626380872).

Almost surely, 2^3131904345 is an apocalyptic number.

It is an amenable number.

3131904345 is a deficient number, since it is larger than the sum of its proper divisors (1879142631).

3131904345 is a wasteful number, since it uses less digits than its factorization.

3131904345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208793631.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 3131904345 is about 55963.4197043033. The cubic root of 3131904345 is about 1463.0847932363.

Adding to 3131904345 its reverse (5434091313), we get a palindrome (8565995658).

The spelling of 3131904345 in words is "three billion, one hundred thirty-one million, nine hundred four thousand, three hundred forty-five".