20311132304434 has 8 divisors (see below), whose sum is σ = 30492716136048. Its totient is φ = 10146893592420.

The previous prime is 20311132304431. The next prime is 20311132304503. The reversal of 20311132304434 is 43440323111302.

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

It is a super-2 number, since 2×20311132304434² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20311132304396 and 20311132304405.

It is not an unprimeable number, because it can be changed into a prime (20311132304431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4336276972 + ... + 4336281655.

It is an arithmetic number, because the mean of its divisors is an integer number (3811589517006).

Almost surely, 2^{20311132304434} is an apocalyptic number.

20311132304434 is a deficient number, since it is larger than the sum of its proper divisors (10181583831614).

20311132304434 is a wasteful number, since it uses less digits than its factorization.

20311132304434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672559800.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 20311132304434 its reverse (43440323111302), we get a palindrome (63751455415736).

The spelling of 20311132304434 in words is "twenty trillion, three hundred eleven billion, one hundred thirty-two million, three hundred four thousand, four hundred thirty-four".