10420431012 has 36 divisors (see below), whose sum is σ = 26344481436. Its totient is φ = 3472956480.

The previous prime is 10420431001. The next prime is 10420431017. The reversal of 10420431012 is 21013402401.

It can be written as a sum of positive squares in 2 ways, for example, as 5472152676 + 4948278336 = 73974^2 + 70344^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10420431017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278962 + ... + 314102.

It is an arithmetic number, because the mean of its divisors is an integer number (731791151).

Almost surely, 2^10420431012 is an apocalyptic number.

10420431012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10420431012 is an abundant number, since it is smaller than the sum of its proper divisors (15924050424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10420431012 is a wasteful number, since it uses less digits than its factorization.

10420431012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43388 (or 43383 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10420431012 its reverse (21013402401), we get a palindrome (31433833413).

The spelling of 10420431012 in words is "ten billion, four hundred twenty million, four hundred thirty-one thousand, twelve".