31100045239 has 2 divisors, whose sum is σ = 31100045240. Its totient is φ = 31100045238.

The previous prime is 31100045233. The next prime is 31100045267. The reversal of 31100045239 is 93254000113.

It is an a-pointer prime, because the next prime (31100045267) can be obtained adding 31100045239 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31100045239 - 2¹³ = 31100037047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31100045233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550022619 + 15550022620.

It is an arithmetic number, because the mean of its divisors is an integer number (15550022620).

Almost surely, 2^31100045239 is an apocalyptic number.

31100045239 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100045239 is an equidigital number, since it uses as much as digits as its factorization.

31100045239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 31100045239 in words is "thirty-one billion, one hundred million, forty-five thousand, two hundred thirty-nine".