123031211043 has 16 divisors (see below), whose sum is σ = 185958106880. Its totient is φ = 71726697504.

The previous prime is 123031211041. The next prime is 123031211087. The reversal of 123031211043 is 340112130321.

It is not a de Polignac number, because 123031211043 - 2¹ = 123031211041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123031211041) 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, 83016271 + ... + 83017752.

It is an arithmetic number, because the mean of its divisors is an integer number (11622381680).

Almost surely, 2^123031211043 is an apocalyptic number.

123031211043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123031211043 is a deficient number, since it is larger than the sum of its proper divisors (62926895837).

123031211043 is a wasteful number, since it uses less digits than its factorization.

123031211043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166034058.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123031211043 its reverse (340112130321), we get a palindrome (463143341364).

The spelling of 123031211043 in words is "one hundred twenty-three billion, thirty-one million, two hundred eleven thousand, forty-three".