1321163731435 has 32 divisors (see below), whose sum is σ = 1656483139584. Its totient is φ = 1010445840000.

The previous prime is 1321163731417. The next prime is 1321163731471. The reversal of 1321163731435 is 5341373611231.

It is not a de Polignac number, because 1321163731435 - 2⁹ = 1321163730923 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4080372 + ... + 4392238.

It is an arithmetic number, because the mean of its divisors is an integer number (51765098112).

Almost surely, 2^{1321163731435} is an apocalyptic number.

1321163731435 is a deficient number, since it is larger than the sum of its proper divisors (335319408149).

1321163731435 is a wasteful number, since it uses less digits than its factorization.

1321163731435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312235.

The product of its digits is 136080, while the sum is 40.

The spelling of 1321163731435 in words is "one trillion, three hundred twenty-one billion, one hundred sixty-three million, seven hundred thirty-one thousand, four hundred thirty-five".