10231320 has 128 divisors (see below), whose sum is σ = 35043840. Its totient is φ = 2365440.

The previous prime is 10231303. The next prime is 10231337. The reversal of 10231320 is 2313201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10231303) and next prime (10231337).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10231296 and 10231305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30192 + ... + 30528.

It is an arithmetic number, because the mean of its divisors is an integer number (273780).

Almost surely, 2^10231320 is an apocalyptic number.

10231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17521920).

10231320 is an abundant number, since it is smaller than the sum of its proper divisors (24812520).

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

10231320 is a wasteful number, since it uses less digits than its factorization.

10231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 10231320 is about 3198.6434624697. The cubic root of 10231320 is about 217.0920348346.

Adding to 10231320 its reverse (2313201), we get a palindrome (12544521).

The spelling of 10231320 in words is "ten million, two hundred thirty-one thousand, three hundred twenty".