30155617223 has 2 divisors, whose sum is σ = 30155617224. Its totient is φ = 30155617222.

The previous prime is 30155617207. The next prime is 30155617243. The reversal of 30155617223 is 32271655103.

It is a weak prime.

It is an emirp because it is prime and its reverse (32271655103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30155617223 - 2⁴ = 30155617207 is a prime.

It is a super-2 number, since 2×30155617223² (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 (30155617243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15077808611 + 15077808612.

It is an arithmetic number, because the mean of its divisors is an integer number (15077808612).

Almost surely, 2^30155617223 is an apocalyptic number.

30155617223 is a deficient number, since it is larger than the sum of its proper divisors (1).

30155617223 is an equidigital number, since it uses as much as digits as its factorization.

30155617223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 30155617223 in words is "thirty billion, one hundred fifty-five million, six hundred seventeen thousand, two hundred twenty-three".