10515231420 has 48 divisors (see below), whose sum is σ = 29582222208. Its totient is φ = 2790768960.

The previous prime is 10515231401. The next prime is 10515231439. The reversal of 10515231420 is 2413251501.

It is a happy number.

10515231420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10515231401) and next prime (10515231439).

It is a super-2 number, since 2×10515231420² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 402634 + ... + 427953.

It is an arithmetic number, because the mean of its divisors is an integer number (616296296).

Almost surely, 2^10515231420 is an apocalyptic number.

10515231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10515231420 is an abundant number, since it is smaller than the sum of its proper divisors (19066990788).

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

10515231420 is a wasteful number, since it uses less digits than its factorization.

10515231420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830810 (or 830808 counting only the distinct ones).

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

Adding to 10515231420 its reverse (2413251501), we get a palindrome (12928482921).

The spelling of 10515231420 in words is "ten billion, five hundred fifteen million, two hundred thirty-one thousand, four hundred twenty".