31325253539 has 2 divisors, whose sum is σ = 31325253540. Its totient is φ = 31325253538.

The previous prime is 31325253527. The next prime is 31325253593. The reversal of 31325253539 is 93535252313.

Together with next prime (31325253593) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (93535252313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31325253539 - 2¹⁶ = 31325188003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31325253496 and 31325253505.

It is not a weakly prime, because it can be changed into another prime (31325255539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15662626769 + 15662626770.

It is an arithmetic number, because the mean of its divisors is an integer number (15662626770).

Almost surely, 2^31325253539 is an apocalyptic number.

31325253539 is a deficient number, since it is larger than the sum of its proper divisors (1).

31325253539 is an equidigital number, since it uses as much as digits as its factorization.

31325253539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 364500, while the sum is 41.

The spelling of 31325253539 in words is "thirty-one billion, three hundred twenty-five million, two hundred fifty-three thousand, five hundred thirty-nine".