2131251 has 8 divisors (see below), whose sum is σ = 2854800.
Its totient is φ = 1414272.
The previous prime is 2131247. The next prime is 2131253. The reversal of 2131251 is 1521312.
Adding to 2131251 its reverse (1521312), we get a palindrome (3652563).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 2131251 - 22 = 2131247 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 2131251.
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, 826 + ... + 2223.
It is an arithmetic number, because the mean of its divisors is an integer number (356850).
22131251 is an apocalyptic number.
2131251 is a deficient number, since it is larger than the sum of its proper divisors (723549).
2131251 is a wasteful number, since it uses less digits than its factorization.
2131251 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3285.
The product of its digits is 60, while the sum is 15.
The square root of 2131251 is about 1459.8804745595.
The cubic root of 2131251 is about 128.6900195053.
The spelling of 2131251 in words is "two million, one hundred thirty-one thousand, two hundred fifty-one".