2154311 has 2 divisors, whose sum is σ = 2154312. Its totient is φ = 2154310.

The previous prime is 2154307. The next prime is 2154319. The reversal of 2154311 is 1134512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2154311 - 2² = 2154307 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077155 + 1077156.

It is an arithmetic number, because the mean of its divisors is an integer number (1077156).

2^2154311 is an apocalyptic number.

2154311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154311 is an equidigital number, since it uses as much as digits as its factorization.

2154311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 17.

The square root of 2154311 is about 1467.7571324984. The cubic root of 2154311 is about 129.1524947800.

Adding to 2154311 its reverse (1134512), we get a palindrome (3288823).

The spelling of 2154311 in words is "two million, one hundred fifty-four thousand, three hundred eleven".