20231691906 has 8 divisors (see below), whose sum is σ = 40463383824. Its totient is φ = 6743897300.

The previous prime is 20231691847. The next prime is 20231691983. The reversal of 20231691906 is 60919613202.

It is a sphenic number, since it is the product of 3 distinct primes.

20231691906 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685974320 + ... + 1685974331.

It is an arithmetic number, because the mean of its divisors is an integer number (5057922978).

Almost surely, 2^20231691906 is an apocalyptic number.

20231691906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20231691906 is a wasteful number, since it uses less digits than its factorization.

20231691906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371948656.

The product of its (nonzero) digits is 34992, while the sum is 39.

The spelling of 20231691906 in words is "twenty billion, two hundred thirty-one million, six hundred ninety-one thousand, nine hundred six".