30431020423 has 2 divisors, whose sum is σ = 30431020424. Its totient is φ = 30431020422.

The previous prime is 30431020409. The next prime is 30431020429. The reversal of 30431020423 is 32402013403.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30431020423 - 2¹⁷ = 30430889351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30431020394 and 30431020403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30431020429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15215510211 + 15215510212.

It is an arithmetic number, because the mean of its divisors is an integer number (15215510212).

Almost surely, 2^30431020423 is an apocalyptic number.

30431020423 is a deficient number, since it is larger than the sum of its proper divisors (1).

30431020423 is an equidigital number, since it uses as much as digits as its factorization.

30431020423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 30431020423 its reverse (32402013403), we get a palindrome (62833033826).

The spelling of 30431020423 in words is "thirty billion, four hundred thirty-one million, twenty thousand, four hundred twenty-three".