20413430331 has 12 divisors (see below), whose sum is σ = 31661647272. Its totient is φ = 11664817248.

The previous prime is 20413430309. The next prime is 20413430371. The reversal of 20413430331 is 13303431402.

It is not a de Polignac number, because 20413430331 - 2⁶ = 20413430267 is a prime.

It is a super-2 number, since 2×20413430331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20413430371) 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 in 11 ways as a sum of consecutive naturals, for example, 69433290 + ... + 69433583.

It is an arithmetic number, because the mean of its divisors is an integer number (2638470606).

Almost surely, 2^20413430331 is an apocalyptic number.

20413430331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20413430331 is a deficient number, since it is larger than the sum of its proper divisors (11248216941).

20413430331 is a wasteful number, since it uses less digits than its factorization.

20413430331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138866890 (or 138866883 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20413430331 its reverse (13303431402), we get a palindrome (33716861733).

The spelling of 20413430331 in words is "twenty billion, four hundred thirteen million, four hundred thirty thousand, three hundred thirty-one".