123331010004 has 36 divisors (see below), whose sum is σ = 314613519220. Its totient is φ = 40733176320.

The previous prime is 123331010003. The next prime is 123331010027. The reversal of 123331010004 is 400010133321.

It can be written as a sum of positive squares in 2 ways, for example, as 85345779600 + 37985230404 = 292140^2 + 194898^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123331010003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15711037 + ... + 15718884.

Almost surely, 2^123331010004 is an apocalyptic number.

It is an amenable number.

123331010004 is an abundant number, since it is smaller than the sum of its proper divisors (191282509216).

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

123331010004 is a wasteful number, since it uses less digits than its factorization.

123331010004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31430040 (or 31430035 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123331010004 its reverse (400010133321), we get a palindrome (523341143325).

The spelling of 123331010004 in words is "one hundred twenty-three billion, three hundred thirty-one million, ten thousand, four".