20311434552 has 32 divisors (see below), whose sum is σ = 50891706000. Its totient is φ = 6755395584.

The previous prime is 20311434541. The next prime is 20311434581. The reversal of 20311434552 is 25543411302.

It is a super-4 number, since 4×20311434552⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931663 + ... + 953214.

Almost surely, 2^20311434552 is an apocalyptic number.

It is an amenable number.

20311434552 is an abundant number, since it is smaller than the sum of its proper divisors (30580271448).

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

20311434552 is a wasteful number, since it uses less digits than its factorization.

20311434552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885335 (or 1885331 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 20311434552 its reverse (25543411302), we get a palindrome (45854845854).

The spelling of 20311434552 in words is "twenty billion, three hundred eleven million, four hundred thirty-four thousand, five hundred fifty-two".