531428070389 has 2 divisors, whose sum is σ = 531428070390. Its totient is φ = 531428070388.

The previous prime is 531428070323. The next prime is 531428070391. The reversal of 531428070389 is 983070824135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517263024100 + 14165046289 = 719210^2 + 119017^2 .

It is a cyclic number.

It is not a de Polignac number, because 531428070389 - 2⁸ = 531428070133 is a prime.

It is a super-2 number, since 2×531428070389² (a number of 24 digits) contains 22 as substring.

Together with 531428070391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531428079389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265714035194 + 265714035195.

It is an arithmetic number, because the mean of its divisors is an integer number (265714035195).

Almost surely, 2^531428070389 is an apocalyptic number.

It is an amenable number.

531428070389 is a deficient number, since it is larger than the sum of its proper divisors (1).

531428070389 is an equidigital number, since it uses as much as digits as its factorization.

531428070389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 531428070389 in words is "five hundred thirty-one billion, four hundred twenty-eight million, seventy thousand, three hundred eighty-nine".