20311130227 has 2 divisors, whose sum is σ = 20311130228. Its totient is φ = 20311130226.

The previous prime is 20311130183. The next prime is 20311130233. The reversal of 20311130227 is 72203111302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20311130227 - 2²⁷ = 20176912499 is a prime.

It is a super-2 number, since 2×20311130227² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20311130198 and 20311130207.

It is not a weakly prime, because it can be changed into another prime (20311130297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155565113 + 10155565114.

It is an arithmetic number, because the mean of its divisors is an integer number (10155565114).

Almost surely, 2^20311130227 is an apocalyptic number.

20311130227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311130227 is an equidigital number, since it uses as much as digits as its factorization.

20311130227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 20311130227 its reverse (72203111302), we get a palindrome (92514241529).

The spelling of 20311130227 in words is "twenty billion, three hundred eleven million, one hundred thirty thousand, two hundred twenty-seven".