143321321461 has 2 divisors, whose sum is σ = 143321321462. Its totient is φ = 143321321460.

The previous prime is 143321321413. The next prime is 143321321477. The reversal of 143321321461 is 164123123341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134336177361 + 8985144100 = 366519^2 + 94790^2 .

It is a cyclic number.

It is not a de Polignac number, because 143321321461 - 2¹³ = 143321313269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143321321411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71660660730 + 71660660731.

It is an arithmetic number, because the mean of its divisors is an integer number (71660660731).

Almost surely, 2^143321321461 is an apocalyptic number.

It is an amenable number.

143321321461 is a deficient number, since it is larger than the sum of its proper divisors (1).

143321321461 is an equidigital number, since it uses as much as digits as its factorization.

143321321461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The spelling of 143321321461 in words is "one hundred forty-three billion, three hundred twenty-one million, three hundred twenty-one thousand, four hundred sixty-one".