1303435013921 has 2 divisors, whose sum is σ = 1303435013922. Its totient is φ = 1303435013920.

The previous prime is 1303435013917. The next prime is 1303435013953. The reversal of 1303435013921 is 1293105343031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1303387555600 + 47458321 = 1141660^2 + 6889^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303435013921 - 2² = 1303435013917 is a prime.

It is not a weakly prime, because it can be changed into another prime (1303435013971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651717506960 + 651717506961.

It is an arithmetic number, because the mean of its divisors is an integer number (651717506961).

Almost surely, 2^{1303435013921} is an apocalyptic number.

It is an amenable number.

1303435013921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303435013921 is an equidigital number, since it uses as much as digits as its factorization.

1303435013921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 1303435013921 in words is "one trillion, three hundred three billion, four hundred thirty-five million, thirteen thousand, nine hundred twenty-one".