12731239282394 has 8 divisors (see below), whose sum is σ = 19144961843988. Its totient is φ = 6349585334400.

The previous prime is 12731239282319. The next prime is 12731239282417. The reversal of 12731239282394 is 49328293213721.

It can be written as a sum of positive squares in 2 ways, for example, as 11237331997369 + 1493907285025 = 3352213^2 + 1222255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8017152407 + ... + 8017153994.

Almost surely, 2^{12731239282394} is an apocalyptic number.

12731239282394 is a deficient number, since it is larger than the sum of its proper divisors (6413722561594).

12731239282394 is a wasteful number, since it uses less digits than its factorization.

12731239282394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16034306800.

The product of its digits is 7838208, while the sum is 56.

The spelling of 12731239282394 in words is "twelve trillion, seven hundred thirty-one billion, two hundred thirty-nine million, two hundred eighty-two thousand, three hundred ninety-four".