3126913 has 4 divisors (see below), whose sum is σ = 3132628. Its totient is φ = 3121200.

The previous prime is 3126901. The next prime is 3126961. The reversal of 3126913 is 3196213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3196213 = 167 ⋅19139.

It can be written as a sum of positive squares in 2 ways, for example, as 4624 + 3122289 = 68^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 3126913 - 2⁵ = 3126881 is a prime.

It is a Duffinian number.

3126913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3126973) 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, 1938 + ... + 3163.

It is an arithmetic number, because the mean of its divisors is an integer number (783157).

Almost surely, 2^3126913 is an apocalyptic number.

It is an amenable number.

3126913 is a deficient number, since it is larger than the sum of its proper divisors (5715).

3126913 is an equidigital number, since it uses as much as digits as its factorization.

3126913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5714.

The product of its digits is 972, while the sum is 25.

The square root of 3126913 is about 1768.3079482941. The cubic root of 3126913 is about 146.2307136035.

It can be divided in two parts, 312 and 6913, that added together give a square (7225 = 85²).

The spelling of 3126913 in words is "three million, one hundred twenty-six thousand, nine hundred thirteen".