30312031117 has 2 divisors, whose sum is σ = 30312031118. Its totient is φ = 30312031116.

The previous prime is 30312031111. The next prime is 30312031129. The reversal of 30312031117 is 71113021303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25401665641 + 4910365476 = 159379^2 + 70074^2 .

It is a cyclic number.

It is not a de Polignac number, because 30312031117 - 2³¹ = 28164547469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30312031111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156015558 + 15156015559.

It is an arithmetic number, because the mean of its divisors is an integer number (15156015559).

Almost surely, 2^30312031117 is an apocalyptic number.

It is an amenable number.

30312031117 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312031117 is an equidigital number, since it uses as much as digits as its factorization.

30312031117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 22.

The spelling of 30312031117 in words is "thirty billion, three hundred twelve million, thirty-one thousand, one hundred seventeen".