210120013123031 has 8 divisors (see below), whose sum is σ = 242705469703824. Its totient is φ = 179781829409920.

The previous prime is 210120013122983. The next prime is 210120013123039. The reversal of 210120013123031 is 130321310021012.

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 210120013123031 - 2⁶ = 210120013122967 is a prime.

It is a super-2 number, since 2×210120013123031² (a number of 29 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 = 210120013122994 and 210120013123012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120013123039) 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, 561818216720 + ... + 561818217093.

It is an arithmetic number, because the mean of its divisors is an integer number (30338183712978).

Almost surely, 2^{210120013123031} is an apocalyptic number.

210120013123031 is a deficient number, since it is larger than the sum of its proper divisors (32585456580793).

210120013123031 is a wasteful number, since it uses less digits than its factorization.

210120013123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123636433841.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 210120013123031 its reverse (130321310021012), we get a palindrome (340441323144043).

The spelling of 210120013123031 in words is "two hundred ten trillion, one hundred twenty billion, thirteen million, one hundred twenty-three thousand, thirty-one".