10431720 has 128 divisors (see below), whose sum is σ = 37497600. Its totient is φ = 2564352.

The previous prime is 10431709. The next prime is 10431721. The reversal of 10431720 is 2713401.

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

It is a junction number, because it is equal to n+sod(n) for n = 10431693 and 10431702.

It is not an unprimeable number, because it can be changed into a prime (10431721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13669 + ... + 14411.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

Almost surely, 2^10431720 is an apocalyptic number.

10431720 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 10431720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18748800).

10431720 is an abundant number, since it is smaller than the sum of its proper divisors (27065880).

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

10431720 is a wasteful number, since it uses less digits than its factorization.

10431720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 10431720 is about 3229.8173322961. The cubic root of 10431720 is about 218.5002679315.

The spelling of 10431720 in words is "ten million, four hundred thirty-one thousand, seven hundred twenty".