3121057 has 2 divisors, whose sum is σ = 3121058. Its totient is φ = 3121056.

The previous prime is 3121051. The next prime is 3121087. The reversal of 3121057 is 7501213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2047761 + 1073296 = 1431^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121057 - 2¹¹ = 3119009 is a prime.

It is a Chen prime.

It is an Ulam number.

3121057 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3121051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560528 + 1560529.

It is an arithmetic number, because the mean of its divisors is an integer number (1560529).

Almost surely, 2^3121057 is an apocalyptic number.

It is an amenable number.

3121057 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121057 is an equidigital number, since it uses as much as digits as its factorization.

3121057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 3121057 is about 1766.6513521349. The cubic root of 3121057 is about 146.1393708869.

It can be divided in two parts, 312 and 1057, that added together give a square (1369 = 37²).

The spelling of 3121057 in words is "three million, one hundred twenty-one thousand, fifty-seven".