1003121331123 has 8 divisors (see below), whose sum is σ = 1346471586000. Its totient is φ = 664259315168.

The previous prime is 1003121331109. The next prime is 1003121331131. The reversal of 1003121331123 is 3211331213001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1003121331123 - 2⁸ = 1003121330867 is a prime.

It is a super-2 number, since 2×1003121331123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1003121331123.

It is not an unprimeable number, because it can be changed into a prime (1003121331523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122059208 + ... + 1122060101.

It is an arithmetic number, because the mean of its divisors is an integer number (168308948250).

Almost surely, 2^{1003121331123} is an apocalyptic number.

1003121331123 is a deficient number, since it is larger than the sum of its proper divisors (343350254877).

1003121331123 is a wasteful number, since it uses less digits than its factorization.

1003121331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244119461.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1003121331123 its reverse (3211331213001), we get a palindrome (4214452544124).

The spelling of 1003121331123 in words is "one trillion, three billion, one hundred twenty-one million, three hundred thirty-one thousand, one hundred twenty-three".