20311656226 has 4 divisors (see below), whose sum is σ = 30467484342. Its totient is φ = 10155828112.

The previous prime is 20311656221. The next prime is 20311656269. The reversal of 20311656226 is 62265611302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62265611302 = 2 ⋅31132805651.

It can be written as a sum of positive squares in only one way, i.e., 20216574225 + 95082001 = 142185^2 + 9751^2 .

It is a super-3 number, since 3×20311656226³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20311656191 and 20311656200.

It is not an unprimeable number, because it can be changed into a prime (20311656221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077914055 + ... + 5077914058.

Almost surely, 2^20311656226 is an apocalyptic number.

20311656226 is a deficient number, since it is larger than the sum of its proper divisors (10155828116).

20311656226 is a wasteful number, since it uses less digits than its factorization.

20311656226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10155828115.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 20311656226 in words is "twenty billion, three hundred eleven million, six hundred fifty-six thousand, two hundred twenty-six".