10312012420 has 24 divisors (see below), whose sum is σ = 21658713048. Its totient is φ = 4124140800.

The previous prime is 10312012351. The next prime is 10312012421. The reversal of 10312012420 is 2421021301.

It can be written as a sum of positive squares in 4 ways, for example, as 2199047236 + 8112965184 = 46894^2 + 90072^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10312012394 and 10312012403.

It is not an unprimeable number, because it can be changed into a prime (10312012421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97090 + ... + 173350.

It is an arithmetic number, because the mean of its divisors is an integer number (902446377).

Almost surely, 2^10312012420 is an apocalyptic number.

10312012420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10312012420 is an abundant number, since it is smaller than the sum of its proper divisors (11346700628).

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

10312012420 is a wasteful number, since it uses less digits than its factorization.

10312012420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83031 (or 83029 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10312012420 its reverse (2421021301), we get a palindrome (12733033721).

The spelling of 10312012420 in words is "ten billion, three hundred twelve million, twelve thousand, four hundred twenty".