30423515131 has 2 divisors, whose sum is σ = 30423515132. Its totient is φ = 30423515130.

The previous prime is 30423515081. The next prime is 30423515149. The reversal of 30423515131 is 13151532403.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30423515131 - 2²¹ = 30421417979 is a prime.

It is a super-2 number, since 2×30423515131² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30423515131.

It is not a weakly prime, because it can be changed into another prime (30423515831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211757565 + 15211757566.

It is an arithmetic number, because the mean of its divisors is an integer number (15211757566).

Almost surely, 2^30423515131 is an apocalyptic number.

30423515131 is a deficient number, since it is larger than the sum of its proper divisors (1).

30423515131 is an equidigital number, since it uses as much as digits as its factorization.

30423515131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 30423515131 in words is "thirty billion, four hundred twenty-three million, five hundred fifteen thousand, one hundred thirty-one".