3123641 has 2 divisors, whose sum is σ = 3123642. Its totient is φ = 3123640.

The previous prime is 3123629. The next prime is 3123643. The reversal of 3123641 is 1463213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2042041 + 1081600 = 1429^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123641 - 2¹⁸ = 2861497 is a prime.

It is a super-3 number, since 3×3123641³ = 91433342951623391163, which contains 333 as substring.

Together with 3123643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3123643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561820 + 1561821.

It is an arithmetic number, because the mean of its divisors is an integer number (1561821).

Almost surely, 2^3123641 is an apocalyptic number.

It is an amenable number.

3123641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123641 is an equidigital number, since it uses as much as digits as its factorization.

3123641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 3123641 is about 1767.3825279209. The cubic root of 3123641 is about 146.1796905572.

Adding to 3123641 its reverse (1463213), we get a palindrome (4586854).

The spelling of 3123641 in words is "three million, one hundred twenty-three thousand, six hundred forty-one".