20431461007 has 8 divisors (see below), whose sum is σ = 21533013360. Its totient is φ = 19332529920.

The previous prime is 20431460989. The next prime is 20431461119. The reversal of 20431461007 is 70016413402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20431461007 is a prime.

It is a super-2 number, since 2×20431461007² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431464007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639298 + ... + 670495.

It is an arithmetic number, because the mean of its divisors is an integer number (2691626670).

Almost surely, 2^20431461007 is an apocalyptic number.

20431461007 is a deficient number, since it is larger than the sum of its proper divisors (1101552353).

20431461007 is a wasteful number, since it uses less digits than its factorization.

20431461007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310633.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 20431461007 its reverse (70016413402), we get a palindrome (90447874409).

The spelling of 20431461007 in words is "twenty billion, four hundred thirty-one million, four hundred sixty-one thousand, seven".