20531340034 has 32 divisors (see below), whose sum is σ = 33706907136. Its totient is φ = 9350637120.

The previous prime is 20531340029. The next prime is 20531340043. The reversal of 20531340034 is 43004313502.

It is a super-2 number, since 2×20531340034² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20531339990 and 20531340008.

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, 48337 + ... + 208324.

It is an arithmetic number, because the mean of its divisors is an integer number (1053340848).

Almost surely, 2^20531340034 is an apocalyptic number.

20531340034 is a deficient number, since it is larger than the sum of its proper divisors (13175567102).

20531340034 is a wasteful number, since it uses less digits than its factorization.

20531340034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256770.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20531340034 its reverse (43004313502), we get a palindrome (63535653536).

The spelling of 20531340034 in words is "twenty billion, five hundred thirty-one million, three hundred forty thousand, thirty-four".