20213030303231 has 12 divisors (see below), whose sum is σ = 22165481521872. Its totient is φ = 18368027524224.

The previous prime is 20213030303153. The next prime is 20213030303233. The reversal of 20213030303231 is 13230303031202.

It is not a de Polignac number, because 20213030303231 - 2²² = 20213026108927 is a prime.

It is a super-2 number, since 2×20213030303231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213030303197 and 20213030303206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213030303233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 706883315 + ... + 706911908.

It is an arithmetic number, because the mean of its divisors is an integer number (1847123460156).

Almost surely, 2^{20213030303231} is an apocalyptic number.

20213030303231 is a deficient number, since it is larger than the sum of its proper divisors (1952451218641).

20213030303231 is a wasteful number, since it uses less digits than its factorization.

20213030303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413795298 (or 1413795269 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20213030303231 its reverse (13230303031202), we get a palindrome (33443333334433).

The spelling of 20213030303231 in words is "twenty trillion, two hundred thirteen billion, thirty million, three hundred three thousand, two hundred thirty-one".