1229431051 has 2 divisors, whose sum is σ = 1229431052. Its totient is φ = 1229431050.

The previous prime is 1229431031. The next prime is 1229431061. The reversal of 1229431051 is 1501349221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1229431051 - 2¹⁵ = 1229398283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1229431031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614715525 + 614715526.

It is an arithmetic number, because the mean of its divisors is an integer number (614715526).

Almost surely, 2^1229431051 is an apocalyptic number.

1229431051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229431051 is an equidigital number, since it uses as much as digits as its factorization.

1229431051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1229431051 is about 35063.2435892631. The cubic root of 1229431051 is about 1071.2760421963.

The spelling of 1229431051 in words is "one billion, two hundred twenty-nine million, four hundred thirty-one thousand, fifty-one".