3157145730173 has 4 divisors (see below), whose sum is σ = 3157149458268. Its totient is φ = 3157142002080.

The previous prime is 3157145730169. The next prime is 3157145730191. The reversal of 3157145730173 is 3710375417513.

3157145730173 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2312461579684 + 844684150489 = 1520678^2 + 919067^2 .

It is a cyclic number.

It is not a de Polignac number, because 3157145730173 - 2² = 3157145730169 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157145730103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86783 + ... + 2514323.

It is an arithmetic number, because the mean of its divisors is an integer number (789287364567).

Almost surely, 2^{3157145730173} is an apocalyptic number.

It is an amenable number.

3157145730173 is a deficient number, since it is larger than the sum of its proper divisors (3728095).

3157145730173 is a wasteful number, since it uses less digits than its factorization.

3157145730173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728094.

The product of its (nonzero) digits is 926100, while the sum is 47.

The spelling of 3157145730173 in words is "three trillion, one hundred fifty-seven billion, one hundred forty-five million, seven hundred thirty thousand, one hundred seventy-three".