1321031135946 has 16 divisors (see below), whose sum is σ = 2642175379584. Its totient is φ = 440324860704.

The previous prime is 1321031135929. The next prime is 1321031135953. The reversal of 1321031135946 is 6495311301231.

It is a happy 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, 4560610 + ... + 4841613.

It is an arithmetic number, because the mean of its divisors is an integer number (165135961224).

Almost surely, 2^{1321031135946} is an apocalyptic number.

1321031135946 is an abundant number, since it is smaller than the sum of its proper divisors (1321144243638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321031135946 is a wasteful number, since it uses less digits than its factorization.

1321031135946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9425645.

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 1321031135946 in words is "one trillion, three hundred twenty-one billion, thirty-one million, one hundred thirty-five thousand, nine hundred forty-six".