1405311306634 has 4 divisors (see below), whose sum is σ = 2107966959954. Its totient is φ = 702655653316.

The previous prime is 1405311306571. The next prime is 1405311306647. The reversal of 1405311306634 is 4366031135041.

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

It can be written as a sum of positive squares in only one way, i.e., 1284489022609 + 120822284025 = 1133353^2 + 347595^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1405311306593 and 1405311306602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351327826657 + ... + 351327826660.

Almost surely, 2^{1405311306634} is an apocalyptic number.

1405311306634 is a deficient number, since it is larger than the sum of its proper divisors (702655653320).

1405311306634 is an equidigital number, since it uses as much as digits as its factorization.

1405311306634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702655653319.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 1405311306634 in words is "one trillion, four hundred five billion, three hundred eleven million, three hundred six thousand, six hundred thirty-four".