20103161251 has 2 divisors, whose sum is σ = 20103161252. Its totient is φ = 20103161250.

The previous prime is 20103161213. The next prime is 20103161257. The reversal of 20103161251 is 15216130102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20103161251 - 2¹¹ = 20103159203 is a prime.

It is not a weakly prime, because it can be changed into another prime (20103161257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051580625 + 10051580626.

It is an arithmetic number, because the mean of its divisors is an integer number (10051580626).

Almost surely, 2^20103161251 is an apocalyptic number.

20103161251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103161251 is an equidigital number, since it uses as much as digits as its factorization.

20103161251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 20103161251 its reverse (15216130102), we get a palindrome (35319291353).

The spelling of 20103161251 in words is "twenty billion, one hundred three million, one hundred sixty-one thousand, two hundred fifty-one".