30912440837 has 2 divisors, whose sum is σ = 30912440838. Its totient is φ = 30912440836.

The previous prime is 30912440831. The next prime is 30912440851. The reversal of 30912440837 is 73804421903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29682465796 + 1229975041 = 172286^2 + 35071^2 .

It is a cyclic number.

It is not a de Polignac number, because 30912440837 - 2³² = 26617473541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30912440794 and 30912440803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30912440831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15456220418 + 15456220419.

It is an arithmetic number, because the mean of its divisors is an integer number (15456220419).

Almost surely, 2^30912440837 is an apocalyptic number.

It is an amenable number.

30912440837 is a deficient number, since it is larger than the sum of its proper divisors (1).

30912440837 is an equidigital number, since it uses as much as digits as its factorization.

30912440837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 30912440837 in words is "thirty billion, nine hundred twelve million, four hundred forty thousand, eight hundred thirty-seven".