20311320231033 has 32 divisors (see below), whose sum is σ = 29601018854400. Its totient is φ = 12312406472256.

The previous prime is 20311320231031. The next prime is 20311320231067. The reversal of 20311320231033 is 33013202311302.

It is not a de Polignac number, because 20311320231033 - 2¹ = 20311320231031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20311320230994 and 20311320231012.

It is not an unprimeable number, because it can be changed into a prime (20311320231031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143432578 + ... + 143574116.

It is an arithmetic number, because the mean of its divisors is an integer number (925031839200).

Almost surely, 2^{20311320231033} is an apocalyptic number.

It is an amenable number.

20311320231033 is a deficient number, since it is larger than the sum of its proper divisors (9289698623367).

20311320231033 is a wasteful number, since it uses less digits than its factorization.

20311320231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196541.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 20311320231033 its reverse (33013202311302), we get a palindrome (53324522542335).

The spelling of 20311320231033 in words is "twenty trillion, three hundred eleven billion, three hundred twenty million, two hundred thirty-one thousand, thirty-three".