31225452239 has 2 divisors, whose sum is σ = 31225452240. Its totient is φ = 31225452238.

The previous prime is 31225452197. The next prime is 31225452259. The reversal of 31225452239 is 93225452213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31225452239 - 2²⁰ = 31224403663 is a prime.

It is a super-3 number, since 3×31225452239³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31225452259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612726119 + 15612726120.

It is an arithmetic number, because the mean of its divisors is an integer number (15612726120).

Almost surely, 2^31225452239 is an apocalyptic number.

31225452239 is a deficient number, since it is larger than the sum of its proper divisors (1).

31225452239 is an equidigital number, since it uses as much as digits as its factorization.

31225452239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The spelling of 31225452239 in words is "thirty-one billion, two hundred twenty-five million, four hundred fifty-two thousand, two hundred thirty-nine".