20203002311331 has 12 divisors (see below), whose sum is σ = 31335268891272. Its totient is φ = 11544572749248.

The previous prime is 20203002311281. The next prime is 20203002311341. The reversal of 20203002311331 is 13311320030202.

It is not a de Polignac number, because 20203002311331 - 2⁹ = 20203002310819 is a prime.

It is a super-2 number, since 2×20203002311331² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20203002311298 and 20203002311307.

It is not an unprimeable number, because it can be changed into a prime (20203002311341) 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 11 ways as a sum of consecutive naturals, for example, 68717694790 + ... + 68717695083.

It is an arithmetic number, because the mean of its divisors is an integer number (2611272407606).

Almost surely, 2^{20203002311331} is an apocalyptic number.

20203002311331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20203002311331 is a deficient number, since it is larger than the sum of its proper divisors (11132266579941).

20203002311331 is a wasteful number, since it uses less digits than its factorization.

20203002311331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137435389890 (or 137435389883 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20203002311331 its reverse (13311320030202), we get a palindrome (33514322341533).

The spelling of 20203002311331 in words is "twenty trillion, two hundred three billion, two million, three hundred eleven thousand, three hundred thirty-one".