20123333131 has 16 divisors (see below), whose sum is σ = 22732500960. Its totient is φ = 17645393920.

The previous prime is 20123333129. The next prime is 20123333141. The reversal of 20123333131 is 13133332102.

It is not a de Polignac number, because 20123333131 - 2¹ = 20123333129 is a prime.

It is a super-2 number, since 2×20123333131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123333141) 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, 292011 + ... + 354283.

It is an arithmetic number, because the mean of its divisors is an integer number (1420781310).

Almost surely, 2^20123333131 is an apocalyptic number.

20123333131 is a deficient number, since it is larger than the sum of its proper divisors (2609167829).

20123333131 is a wasteful number, since it uses less digits than its factorization.

20123333131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63326.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 20123333131 its reverse (13133332102), we get a palindrome (33256665233).

It can be divided in two parts, 201 and 23333131, that added together give a palindrome (23333332).

The spelling of 20123333131 in words is "twenty billion, one hundred twenty-three million, three hundred thirty-three thousand, one hundred thirty-one".