1234691385321 has 16 divisors (see below), whose sum is σ = 1688448706560. Its totient is φ = 802119657360.

The previous prime is 1234691385313. The next prime is 1234691385379. The reversal of 1234691385321 is 1235831964321.

It is not a de Polignac number, because 1234691385321 - 2³ = 1234691385313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1234691386321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11047941 + ... + 11159138.

It is an arithmetic number, because the mean of its divisors is an integer number (105528044160).

Almost surely, 2^{1234691385321} is an apocalyptic number.

It is an amenable number.

1234691385321 is a deficient number, since it is larger than the sum of its proper divisors (453757321239).

1234691385321 is a wasteful number, since it uses less digits than its factorization.

1234691385321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22207556.

The product of its digits is 933120, while the sum is 48.

The spelling of 1234691385321 in words is "one trillion, two hundred thirty-four billion, six hundred ninety-one million, three hundred eighty-five thousand, three hundred twenty-one".