143135020081 has 2 divisors, whose sum is σ = 143135020082. Its totient is φ = 143135020080.

The previous prime is 143135019977. The next prime is 143135020087. The reversal of 143135020081 is 180020531341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73341305856 + 69793714225 = 270816^2 + 264185^2 .

It is a cyclic number.

It is not a de Polignac number, because 143135020081 - 2²⁵ = 143101465649 is a prime.

It is a super-2 number, since 2×143135020081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143135020087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71567510040 + 71567510041.

It is an arithmetic number, because the mean of its divisors is an integer number (71567510041).

Almost surely, 2^143135020081 is an apocalyptic number.

It is an amenable number.

143135020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

143135020081 is an equidigital number, since it uses as much as digits as its factorization.

143135020081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 143135020081 in words is "one hundred forty-three billion, one hundred thirty-five million, twenty thousand, eighty-one".