20340311331234 has 32 divisors (see below), whose sum is σ = 41009161881600. Its totient is φ = 6725368645632.

The previous prime is 20340311331227. The next prime is 20340311331247. The reversal of 20340311331234 is 43213311304302.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131592 + ... + 6477740.

It is an arithmetic number, because the mean of its divisors is an integer number (1281536308800).

Almost surely, 2^{20340311331234} is an apocalyptic number.

20340311331234 is an abundant number, since it is smaller than the sum of its proper divisors (20668850550366).

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

20340311331234 is a wasteful number, since it uses less digits than its factorization.

20340311331234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351274.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 20340311331234 its reverse (43213311304302), we get a palindrome (63553622635536).

The spelling of 20340311331234 in words is "twenty trillion, three hundred forty billion, three hundred eleven million, three hundred thirty-one thousand, two hundred thirty-four".