3145138 has 4 divisors (see below), whose sum is σ = 4717710. Its totient is φ = 1572568.

The previous prime is 3145133. The next prime is 3145141. The reversal of 3145138 is 8315413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2036329 + 1108809 = 1427^2 + 1053^2 .

It is a super-3 number, since 3×3145138³ = 93334106067098304216, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3145133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786283 + ... + 786286.

Almost surely, 2^3145138 is an apocalyptic number.

3145138 is a deficient number, since it is larger than the sum of its proper divisors (1572572).

3145138 is a wasteful number, since it uses less digits than its factorization.

3145138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572571.

The product of its digits is 1440, while the sum is 25.

The square root of 3145138 is about 1773.4536926574. The cubic root of 3145138 is about 146.5142620275.

The spelling of 3145138 in words is "three million, one hundred forty-five thousand, one hundred thirty-eight".