31112524409 has 2 divisors, whose sum is σ = 31112524410. Its totient is φ = 31112524408.

The previous prime is 31112524393. The next prime is 31112524441. The reversal of 31112524409 is 90442521113.

It is an a-pointer prime, because the next prime (31112524441) can be obtained adding 31112524409 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23584359184 + 7528165225 = 153572^2 + 86765^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112524409 - 2⁴ = 31112524393 is a prime.

It is a super-4 number, since 4×31112524409⁴ (a number of 43 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (31112524309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556262204 + 15556262205.

It is an arithmetic number, because the mean of its divisors is an integer number (15556262205).

Almost surely, 2^31112524409 is an apocalyptic number.

It is an amenable number.

31112524409 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112524409 is an equidigital number, since it uses as much as digits as its factorization.

31112524409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 31112524409 in words is "thirty-one billion, one hundred twelve million, five hundred twenty-four thousand, four hundred nine".