143389931431 has 2 divisors, whose sum is σ = 143389931432. Its totient is φ = 143389931430.

The previous prime is 143389931413. The next prime is 143389931437. The reversal of 143389931431 is 134139983341.

Together with previous prime (143389931413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143389931431 is a prime.

It is a super-2 number, since 2×143389931431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143389931437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71694965715 + 71694965716.

It is an arithmetic number, because the mean of its divisors is an integer number (71694965716).

Almost surely, 2^143389931431 is an apocalyptic number.

143389931431 is a deficient number, since it is larger than the sum of its proper divisors (1).

143389931431 is an equidigital number, since it uses as much as digits as its factorization.

143389931431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The spelling of 143389931431 in words is "one hundred forty-three billion, three hundred eighty-nine million, nine hundred thirty-one thousand, four hundred thirty-one".