10312215540 has 48 divisors (see below), whose sum is σ = 31499133120. Its totient is φ = 2499930880.

The previous prime is 10312215533. The next prime is 10312215541. The reversal of 10312215540 is 4551221301.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10312215540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10312215541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7811625 + ... + 7812944.

It is an arithmetic number, because the mean of its divisors is an integer number (656231940).

Almost surely, 2^10312215540 is an apocalyptic number.

10312215540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10312215540 is an abundant number, since it is smaller than the sum of its proper divisors (21186917580).

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

10312215540 is a wasteful number, since it uses less digits than its factorization.

10312215540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15624592 (or 15624590 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 10312215540 its reverse (4551221301), we get a palindrome (14863436841).

The spelling of 10312215540 in words is "ten billion, three hundred twelve million, two hundred fifteen thousand, five hundred forty".