20123310215 has 8 divisors (see below), whose sum is σ = 24160835040. Its totient is φ = 16090072992.

The previous prime is 20123310211. The next prime is 20123310253. The reversal of 20123310215 is 51201332102.

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 20123310215 - 2² = 20123310211 is a prime.

It is a super-2 number, since 2×20123310215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123310211) 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, 1061564 + ... + 1080353.

It is an arithmetic number, because the mean of its divisors is an integer number (3020104380).

Almost surely, 2^20123310215 is an apocalyptic number.

20123310215 is a deficient number, since it is larger than the sum of its proper divisors (4037524825).

20123310215 is a wasteful number, since it uses less digits than its factorization.

20123310215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143801.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20123310215 its reverse (51201332102), we get a palindrome (71324642317).

The spelling of 20123310215 in words is "twenty billion, one hundred twenty-three million, three hundred ten thousand, two hundred fifteen".