12990311 has 2 divisors, whose sum is σ = 12990312. Its totient is φ = 12990310.

The previous prime is 12990269. The next prime is 12990323. The reversal of 12990311 is 11309921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12990311 - 2¹⁰ = 12989287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12990361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6495155 + 6495156.

It is an arithmetic number, because the mean of its divisors is an integer number (6495156).

Almost surely, 2^12990311 is an apocalyptic number.

12990311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12990311 is an equidigital number, since it uses as much as digits as its factorization.

12990311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 12990311 is about 3604.2074024673. The cubic root of 12990311 is about 235.0750386592.

The spelling of 12990311 in words is "twelve million, nine hundred ninety thousand, three hundred eleven".