20220331131231 has 16 divisors (see below), whose sum is σ = 33613017984768. Its totient is φ = 10504068120000.

The previous prime is 20220331131197. The next prime is 20220331131257. The reversal of 20220331131231 is 13213113302202.

It is not a de Polignac number, because 20220331131231 - 2⁷ = 20220331131103 is a prime.

It is a super-2 number, since 2×20220331131231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220331131271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43766950270 + ... + 43766950731.

It is an arithmetic number, because the mean of its divisors is an integer number (2100813624048).

Almost surely, 2^{20220331131231} is an apocalyptic number.

20220331131231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20220331131231 is a deficient number, since it is larger than the sum of its proper divisors (13392686853537).

20220331131231 is a wasteful number, since it uses less digits than its factorization.

20220331131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87533901022.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20220331131231 its reverse (13213113302202), we get a palindrome (33433444433433).

The spelling of 20220331131231 in words is "twenty trillion, two hundred twenty billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred thirty-one".