123311013232 has 80 divisors (see below), whose sum is σ = 276917097600. Its totient is φ = 52604017920.

The previous prime is 123311013211. The next prime is 123311013247. The reversal of 123311013232 is 232310113321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185494 + ... + 530122.

It is an arithmetic number, because the mean of its divisors is an integer number (3461463720).

Almost surely, 2^123311013232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123311013232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138458548800).

123311013232 is an abundant number, since it is smaller than the sum of its proper divisors (153606084368).

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

123311013232 is a wasteful number, since it uses less digits than its factorization.

123311013232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344774 (or 344768 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123311013232 its reverse (232310113321), we get a palindrome (355621126553).

The spelling of 123311013232 in words is "one hundred twenty-three billion, three hundred eleven million, thirteen thousand, two hundred thirty-two".