20112311415 has 48 divisors (see below), whose sum is σ = 37884647808. Its totient is φ = 9083398464.

The previous prime is 20112311407. The next prime is 20112311447. The reversal of 20112311415 is 51411321102.

It is not a de Polignac number, because 20112311415 - 2³ = 20112311407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20112311391 and 20112311400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103837 + ... + 225846.

It is an arithmetic number, because the mean of its divisors is an integer number (789263496).

Almost surely, 2^20112311415 is an apocalyptic number.

20112311415 is a deficient number, since it is larger than the sum of its proper divisors (17772336393).

20112311415 is a wasteful number, since it uses less digits than its factorization.

20112311415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329788 (or 329781 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 20112311415 its reverse (51411321102), we get a palindrome (71523632517).

The spelling of 20112311415 in words is "twenty billion, one hundred twelve million, three hundred eleven thousand, four hundred fifteen".