403231120 has 20 divisors (see below), whose sum is σ = 937512540. Its totient is φ = 161292416.

The previous prime is 403231111. The next prime is 403231123. The reversal of 403231120 is 21132304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 190771344 + 212459776 = 13812^2 + 14576^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×403231120² = 325190672272908800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 403231094 and 403231103.

It is not an unprimeable number, because it can be changed into a prime (403231123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520115 + ... + 2520274.

It is an arithmetic number, because the mean of its divisors is an integer number (46875627).

Almost surely, 2^403231120 is an apocalyptic number.

403231120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403231120 is an abundant number, since it is smaller than the sum of its proper divisors (534281420).

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

403231120 is a wasteful number, since it uses less digits than its factorization.

403231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5040402 (or 5040396 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 403231120 is about 20080.6155284145. The cubic root of 403231120 is about 738.7849062996.

Adding to 403231120 its reverse (21132304), we get a palindrome (424363424).

The spelling of 403231120 in words is "four hundred three million, two hundred thirty-one thousand, one hundred twenty".