2131351 has 4 divisors (see below), whose sum is σ = 2134312. Its totient is φ = 2128392.

The previous prime is 2131321. The next prime is 2131361. The reversal of 2131351 is 1531312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2131351 - 2⁵ = 2131319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (533578).

2^2131351 is an apocalyptic number.

2131351 is a deficient number, since it is larger than the sum of its proper divisors (2961).

2131351 is a wasteful number, since it uses less digits than its factorization.

2131351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960.

The product of its digits is 90, while the sum is 16.

The square root of 2131351 is about 1459.9147235370. The cubic root of 2131351 is about 128.6920322200.

Adding to 2131351 its reverse (1531312), we get a palindrome (3662663).

The spelling of 2131351 in words is "two million, one hundred thirty-one thousand, three hundred fifty-one".