30431381401 has 2 divisors, whose sum is σ = 30431381402. Its totient is φ = 30431381400.

The previous prime is 30431381381. The next prime is 30431381413. The reversal of 30431381401 is 10418313403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25376171401 + 5055210000 = 159299^2 + 71100^2 .

It is a cyclic number.

It is not a de Polignac number, because 30431381401 - 2⁷ = 30431381273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30431381401.

It is not a weakly prime, because it can be changed into another prime (30431381501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15215690700 + 15215690701.

It is an arithmetic number, because the mean of its divisors is an integer number (15215690701).

Almost surely, 2^30431381401 is an apocalyptic number.

It is an amenable number.

30431381401 is a deficient number, since it is larger than the sum of its proper divisors (1).

30431381401 is an equidigital number, since it uses as much as digits as its factorization.

30431381401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 30431381401 its reverse (10418313403), we get a palindrome (40849694804).

The spelling of 30431381401 in words is "thirty billion, four hundred thirty-one million, three hundred eighty-one thousand, four hundred one".