203121031427 has 2 divisors, whose sum is σ = 203121031428. Its totient is φ = 203121031426.

The previous prime is 203121031403. The next prime is 203121031453. The reversal of 203121031427 is 724130121302.

It is an a-pointer prime, because the next prime (203121031453) can be obtained adding 203121031427 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203121031427 - 2¹⁴ = 203121015043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203121031396 and 203121031405.

It is not a weakly prime, because it can be changed into another prime (203121021427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101560515713 + 101560515714.

It is an arithmetic number, because the mean of its divisors is an integer number (101560515714).

Almost surely, 2^203121031427 is an apocalyptic number.

203121031427 is a deficient number, since it is larger than the sum of its proper divisors (1).

203121031427 is an equidigital number, since it uses as much as digits as its factorization.

203121031427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 203121031427 its reverse (724130121302), we get a palindrome (927251152729).

The spelling of 203121031427 in words is "two hundred three billion, one hundred twenty-one million, thirty-one thousand, four hundred twenty-seven".