2157313 has 2 divisors, whose sum is σ = 2157314. Its totient is φ = 2157312.

The previous prime is 2157307. The next prime is 2157319. The reversal of 2157313 is 3137512.

It is a balanced prime because it is at equal distance from previous prime (2157307) and next prime (2157319).

It can be written as a sum of positive squares in only one way, i.e., 2093809 + 63504 = 1447^2 + 252^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157313 - 2⁹ = 2156801 is a prime.

2157313 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2157319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078656 + 1078657.

It is an arithmetic number, because the mean of its divisors is an integer number (1078657).

2^2157313 is an apocalyptic number.

It is an amenable number.

2157313 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157313 is an equidigital number, since it uses as much as digits as its factorization.

2157313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 630, while the sum is 22.

The square root of 2157313 is about 1468.7794252372. The cubic root of 2157313 is about 129.2124576230.

The spelling of 2157313 in words is "two million, one hundred fifty-seven thousand, three hundred thirteen".