309819420011 has 4 divisors (see below), whose sum is σ = 309820986552. Its totient is φ = 309817853472.

The previous prime is 309819419993. The next prime is 309819420023. The reversal of 309819420011 is 110024918903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110024918903 = 192193 ⋅572471.

It is a cyclic number.

It is not a de Polignac number, because 309819420011 - 2³⁰ = 308745678187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309819420611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434990 + ... + 899363.

It is an arithmetic number, because the mean of its divisors is an integer number (77455246638).

Almost surely, 2^309819420011 is an apocalyptic number.

309819420011 is a deficient number, since it is larger than the sum of its proper divisors (1566541).

309819420011 is a wasteful number, since it uses less digits than its factorization.

309819420011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566540.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 309819420011 in words is "three hundred nine billion, eight hundred nineteen million, four hundred twenty thousand, eleven".