3123103120156 has 12 divisors (see below), whose sum is σ = 5465462282280. Its totient is φ = 1561542468080.

The previous prime is 3123103120091. The next prime is 3123103120157. The reversal of 3123103120156 is 6510213013213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123103120157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1468486 + ... + 2898733.

It is an arithmetic number, because the mean of its divisors is an integer number (455455190190).

Almost surely, 2^{3123103120156} is an apocalyptic number.

It is an amenable number.

3123103120156 is a deficient number, since it is larger than the sum of its proper divisors (2342359162124).

3123103120156 is a wasteful number, since it uses less digits than its factorization.

3123103120156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546004 (or 4546002 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 3123103120156 its reverse (6510213013213), we get a palindrome (9633316133369).

The spelling of 3123103120156 in words is "three trillion, one hundred twenty-three billion, one hundred three million, one hundred twenty thousand, one hundred fifty-six".