1213726431235 has 8 divisors (see below), whose sum is σ = 1456572898656. Its totient is φ = 970913690880.

The previous prime is 1213726431199. The next prime is 1213726431241. The reversal of 1213726431235 is 5321346273121.

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

It is not a de Polignac number, because 1213726431235 - 2⁷ = 1213726431107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8352526 + ... + 8496595.

It is an arithmetic number, because the mean of its divisors is an integer number (182071612332).

Almost surely, 2^{1213726431235} is an apocalyptic number.

1213726431235 is a deficient number, since it is larger than the sum of its proper divisors (242846467421).

1213726431235 is a wasteful number, since it uses less digits than its factorization.

1213726431235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16863533.

The product of its digits is 181440, while the sum is 40.

The spelling of 1213726431235 in words is "one trillion, two hundred thirteen billion, seven hundred twenty-six million, four hundred thirty-one thousand, two hundred thirty-five".