1231103120029 has 4 divisors (see below), whose sum is σ = 1231105341184. Its totient is φ = 1231100898876.

The previous prime is 1231103120017. The next prime is 1231103120111. The reversal of 1231103120029 is 9200213011321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1231103120029 - 2²⁵ = 1231069565597 is a prime.

It is a super-2 number, since 2×1231103120029² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231103119985 and 1231103120012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231103120629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483694 + ... + 1642000.

It is an arithmetic number, because the mean of its divisors is an integer number (307776335296).

Almost surely, 2^{1231103120029} is an apocalyptic number.

It is an amenable number.

1231103120029 is a deficient number, since it is larger than the sum of its proper divisors (2221155).

1231103120029 is a wasteful number, since it uses less digits than its factorization.

1231103120029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221154.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 1231103120029 in words is "one trillion, two hundred thirty-one billion, one hundred three million, one hundred twenty thousand, twenty-nine".