30205142831 has 2 divisors, whose sum is σ = 30205142832. Its totient is φ = 30205142830.

The previous prime is 30205142813. The next prime is 30205142839. The reversal of 30205142831 is 13824150203.

It is a happy number.

Together with previous prime (30205142813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13824150203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30205142831 - 2¹⁰ = 30205141807 is a prime.

It is a super-2 number, since 2×30205142831² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30205142794 and 30205142803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30205142839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15102571415 + 15102571416.

It is an arithmetic number, because the mean of its divisors is an integer number (15102571416).

Almost surely, 2^30205142831 is an apocalyptic number.

30205142831 is a deficient number, since it is larger than the sum of its proper divisors (1).

30205142831 is an equidigital number, since it uses as much as digits as its factorization.

30205142831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 30205142831 in words is "thirty billion, two hundred five million, one hundred forty-two thousand, eight hundred thirty-one".