20311134075 has 48 divisors (see below), whose sum is σ = 37597296000. Its totient is φ = 10749866400.

The previous prime is 20311134029. The next prime is 20311134079. The reversal of 20311134075 is 57043111302.

20311134075 is a `hidden beast` number, since 2 + 0 + 311 + 1 + 340 + 7 + 5 = 666.

It is not a de Polignac number, because 20311134075 - 2⁸ = 20311133819 is a prime.

It is a super-2 number, since 2×20311134075² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20311134079) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26425 + ... + 203274.

It is an arithmetic number, because the mean of its divisors is an integer number (783277000).

Almost surely, 2^20311134075 is an apocalyptic number.

20311134075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20311134075 is a deficient number, since it is larger than the sum of its proper divisors (17286161925).

20311134075 is a wasteful number, since it uses less digits than its factorization.

20311134075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229849 (or 229838 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 20311134075 its reverse (57043111302), we get a palindrome (77354245377).

The spelling of 20311134075 in words is "twenty billion, three hundred eleven million, one hundred thirty-four thousand, seventy-five".