1431064423409 has 2 divisors, whose sum is σ = 1431064423410. Its totient is φ = 1431064423408.

The previous prime is 1431064423381. The next prime is 1431064423457. The reversal of 1431064423409 is 9043244601341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756078942784 + 674985480625 = 869528^2 + 821575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431064423409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1431064423109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715532211704 + 715532211705.

It is an arithmetic number, because the mean of its divisors is an integer number (715532211705).

Almost surely, 2^{1431064423409} is an apocalyptic number.

It is an amenable number.

1431064423409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1431064423409 is an equidigital number, since it uses as much as digits as its factorization.

1431064423409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 1431064423409 in words is "one trillion, four hundred thirty-one billion, sixty-four million, four hundred twenty-three thousand, four hundred nine".