20031352340 has 24 divisors (see below), whose sum is σ = 42069751080. Its totient is φ = 8011795968.

The previous prime is 20031352301. The next prime is 20031352391. The reversal of 20031352340 is 4325313002.

It can be written as a sum of positive squares in 4 ways, for example, as 1967454736 + 18063897604 = 44356^2 + 134402^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207824 + ... + 288536.

It is an arithmetic number, because the mean of its divisors is an integer number (1752906295).

Almost surely, 2^20031352340 is an apocalyptic number.

20031352340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031352340 is an abundant number, since it is smaller than the sum of its proper divisors (22038398740).

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

20031352340 is a wasteful number, since it uses less digits than its factorization.

20031352340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93131 (or 93129 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 20031352340 its reverse (4325313002), we get a palindrome (24356665342).

The spelling of 20031352340 in words is "twenty billion, thirty-one million, three hundred fifty-two thousand, three hundred forty".