143031003421 has 2 divisors, whose sum is σ = 143031003422. Its totient is φ = 143031003420.

The previous prime is 143031003397. The next prime is 143031003473. The reversal of 143031003421 is 124300130341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107692267225 + 35338736196 = 328165^2 + 187986^2 .

It is a cyclic number.

It is not a de Polignac number, because 143031003421 - 2⁹ = 143031002909 is a prime.

It is a super-2 number, since 2×143031003421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143031003392 and 143031003401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143031003721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71515501710 + 71515501711.

It is an arithmetic number, because the mean of its divisors is an integer number (71515501711).

Almost surely, 2^143031003421 is an apocalyptic number.

It is an amenable number.

143031003421 is a deficient number, since it is larger than the sum of its proper divisors (1).

143031003421 is an equidigital number, since it uses as much as digits as its factorization.

143031003421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 143031003421 its reverse (124300130341), we get a palindrome (267331133762).

The spelling of 143031003421 in words is "one hundred forty-three billion, thirty-one million, three thousand, four hundred twenty-one".