1311615133406 has 4 divisors (see below), whose sum is σ = 1967422700112. Its totient is φ = 655807566702.

The previous prime is 1311615133399. The next prime is 1311615133441. The reversal of 1311615133406 is 6043315161131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327903783350 + ... + 327903783353.

It is an arithmetic number, because the mean of its divisors is an integer number (491855675028).

Almost surely, 2^{1311615133406} is an apocalyptic number.

1311615133406 is a deficient number, since it is larger than the sum of its proper divisors (655807566706).

1311615133406 is an equidigital number, since it uses as much as digits as its factorization.

1311615133406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655807566705.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 1311615133406 in words is "one trillion, three hundred eleven billion, six hundred fifteen million, one hundred thirty-three thousand, four hundred six".