20342403331 has 4 divisors (see below), whose sum is σ = 20361983200. Its totient is φ = 20322823464.

The previous prime is 20342403313. The next prime is 20342403377. The reversal of 20342403331 is 13330424302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20342403331 - 2⁹ = 20342402819 is a prime.

It is a super-2 number, since 2×20342403331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20342403296 and 20342403305.

It is not an unprimeable number, because it can be changed into a prime (20342403311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9788376 + ... + 9790453.

It is an arithmetic number, because the mean of its divisors is an integer number (5090495800).

Almost surely, 2^20342403331 is an apocalyptic number.

20342403331 is a deficient number, since it is larger than the sum of its proper divisors (19579869).

20342403331 is a wasteful number, since it uses less digits than its factorization.

20342403331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19579868.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20342403331 its reverse (13330424302), we get a palindrome (33672827633).

The spelling of 20342403331 in words is "twenty billion, three hundred forty-two million, four hundred three thousand, three hundred thirty-one".