30523421437 has 2 divisors, whose sum is σ = 30523421438. Its totient is φ = 30523421436.

The previous prime is 30523421333. The next prime is 30523421491. The reversal of 30523421437 is 73412432503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26533477881 + 3989943556 = 162891^2 + 63166^2 .

It is a cyclic number.

It is not a de Polignac number, because 30523421437 - 2⁷ = 30523421309 is a prime.

It is a super-2 number, since 2×30523421437² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30523421237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15261710718 + 15261710719.

It is an arithmetic number, because the mean of its divisors is an integer number (15261710719).

Almost surely, 2^30523421437 is an apocalyptic number.

It is an amenable number.

30523421437 is a deficient number, since it is larger than the sum of its proper divisors (1).

30523421437 is an equidigital number, since it uses as much as digits as its factorization.

30523421437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 34.

The spelling of 30523421437 in words is "thirty billion, five hundred twenty-three million, four hundred twenty-one thousand, four hundred thirty-seven".