123231342020 has 12 divisors (see below), whose sum is σ = 258785818284. Its totient is φ = 49292536800.

The previous prime is 123231342019. The next prime is 123231342043. The reversal of 123231342020 is 20243132321.

It can be written as a sum of positive squares in 2 ways, for example, as 57538576384 + 65692765636 = 239872^2 + 256306^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080783531 + ... + 3080783570.

It is an arithmetic number, because the mean of its divisors is an integer number (21565484857).

Almost surely, 2^123231342020 is an apocalyptic number.

123231342020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123231342020 is an abundant number, since it is smaller than the sum of its proper divisors (135554476264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123231342020 is a wasteful number, since it uses less digits than its factorization.

123231342020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161567110 (or 6161567108 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 123231342020 its reverse (20243132321), we get a palindrome (143474474341).

The spelling of 123231342020 in words is "one hundred twenty-three billion, two hundred thirty-one million, three hundred forty-two thousand, twenty".