12894731 has 2 divisors, whose sum is σ = 12894732. Its totient is φ = 12894730.

The previous prime is 12894709. The next prime is 12894733. The reversal of 12894731 is 13749821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12894731 - 2¹⁰ = 12893707 is a prime.

It is a super-2 number, since 2×12894731² = 332548175124722, which contains 22 as substring.

Together with 12894733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12894691 and 12894700.

It is not a weakly prime, because it can be changed into another prime (12894733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6447365 + 6447366.

It is an arithmetic number, because the mean of its divisors is an integer number (6447366).

Almost surely, 2^12894731 is an apocalyptic number.

12894731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12894731 is an equidigital number, since it uses as much as digits as its factorization.

12894731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 12894731 is about 3590.9234188437. The cubic root of 12894731 is about 234.4970744449.

The spelling of 12894731 in words is "twelve million, eight hundred ninety-four thousand, seven hundred thirty-one".