123031140554421 has 32 divisors (see below), whose sum is σ = 202208346086400. Its totient is φ = 73300525435440.

The previous prime is 123031140554419. The next prime is 123031140554453. The reversal of 123031140554421 is 124455041130321.

123031140554421 is a `hidden beast` number, since 1 + 2 + 30 + 3 + 11 + 40 + 554 + 4 + 21 = 666.

It is not a de Polignac number, because 123031140554421 - 2¹ = 123031140554419 is a prime.

It is a super-3 number, since 3×123031140554421³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031140553421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3510544041 + ... + 3510579086.

It is an arithmetic number, because the mean of its divisors is an integer number (6319010815200).

Almost surely, 2^{123031140554421} is an apocalyptic number.

123031140554421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123031140554421 is a deficient number, since it is larger than the sum of its proper divisors (79177205531979).

123031140554421 is a wasteful number, since it uses less digits than its factorization.

123031140554421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7021123206 (or 7021123200 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 123031140554421 its reverse (124455041130321), we get a palindrome (247486181684742).

The spelling of 123031140554421 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred forty million, five hundred fifty-four thousand, four hundred twenty-one".