3147157 has 8 divisors (see below), whose sum is σ = 3421880. Its totient is φ = 2877120.

The previous prime is 3147149. The next prime is 3147161. The reversal of 3147157 is 7517413.

It can be written as a sum of positive squares in 4 ways, for example, as 454276 + 2692881 = 674^2 + 1641^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3147157 - 2³ = 3147149 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147197) 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, 307 + ... + 2527.

It is an arithmetic number, because the mean of its divisors is an integer number (427735).

Almost surely, 2^3147157 is an apocalyptic number.

It is an amenable number.

3147157 is a deficient number, since it is larger than the sum of its proper divisors (274723).

3147157 is a wasteful number, since it uses less digits than its factorization.

3147157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343.

The product of its digits is 2940, while the sum is 28.

The square root of 3147157 is about 1774.0228296163. The cubic root of 3147157 is about 146.5456066001.

The spelling of 3147157 in words is "three million, one hundred forty-seven thousand, one hundred fifty-seven".