12749311 has 2 divisors, whose sum is σ = 12749312. Its totient is φ = 12749310.

The previous prime is 12749293. The next prime is 12749327. The reversal of 12749311 is 11394721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12749311 - 2¹⁷ = 12618239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12749311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12749111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6374655 + 6374656.

It is an arithmetic number, because the mean of its divisors is an integer number (6374656).

Almost surely, 2^12749311 is an apocalyptic number.

12749311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12749311 is an equidigital number, since it uses as much as digits as its factorization.

12749311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 12749311 is about 3570.6177336702. The cubic root of 12749311 is about 233.6122281923.

It can be divided in two parts, 1274 and 9311, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 12749311 in words is "twelve million, seven hundred forty-nine thousand, three hundred eleven".