30431020404431 has 4 divisors (see below), whose sum is σ = 30499713453192. Its totient is φ = 30362327355672.

The previous prime is 30431020404401. The next prime is 30431020404437. The reversal of 30431020404431 is 13440402013403.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30431020404431 - 2¹⁴ = 30431020388047 is a prime.

It is a super-2 number, since 2×30431020404431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30431020404394 and 30431020404403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30431020404437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34346523716 + ... + 34346524601.

It is an arithmetic number, because the mean of its divisors is an integer number (7624928363298).

Almost surely, 2^{30431020404431} is an apocalyptic number.

30431020404431 is a deficient number, since it is larger than the sum of its proper divisors (68693048761).

30431020404431 is an equidigital number, since it uses as much as digits as its factorization.

30431020404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68693048760.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 30431020404431 its reverse (13440402013403), we get a palindrome (43871422417834).

The spelling of 30431020404431 in words is "thirty trillion, four hundred thirty-one billion, twenty million, four hundred four thousand, four hundred thirty-one".