2131257 has 8 divisors (see below), whose sum is σ = 2890080. Its totient is φ = 1396640.

The previous prime is 2131253. The next prime is 2131267. The reversal of 2131257 is 7521312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131257 - 2² = 2131253 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 3¹¹ + 1 + 2⁹ + 5⁹ + 7³ .

2131257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2131253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5844 + ... + 6197.

It is an arithmetic number, because the mean of its divisors is an integer number (361260).

2^2131257 is an apocalyptic number.

It is an amenable number.

2131257 is a deficient number, since it is larger than the sum of its proper divisors (758823).

2131257 is a wasteful number, since it uses less digits than its factorization.

2131257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12103.

The product of its digits is 420, while the sum is 21.

The square root of 2131257 is about 1459.8825295208. The cubic root of 2131257 is about 128.6901402700.

Adding to 2131257 its reverse (7521312), we get a palindrome (9652569).

The spelling of 2131257 in words is "two million, one hundred thirty-one thousand, two hundred fifty-seven".