20340013331 has 8 divisors (see below), whose sum is σ = 22501628928. Its totient is φ = 18230485000.

The previous prime is 20340013321. The next prime is 20340013459. The reversal of 20340013331 is 13331004302.

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

It is a cyclic number.

It is not a de Polignac number, because 20340013331 - 2²² = 20335819027 is a prime.

It is a super-2 number, since 2×20340013331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340013321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13020995 + ... + 13022556.

It is an arithmetic number, because the mean of its divisors is an integer number (2812703616).

Almost surely, 2^20340013331 is an apocalyptic number.

20340013331 is a deficient number, since it is larger than the sum of its proper divisors (2161615597).

20340013331 is a wasteful number, since it uses less digits than its factorization.

20340013331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26043633.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20340013331 its reverse (13331004302), we get a palindrome (33671017633).

The spelling of 20340013331 in words is "twenty billion, three hundred forty million, thirteen thousand, three hundred thirty-one".