402231123 has 32 divisors (see below), whose sum is σ = 695531520. Its totient is φ = 224951040.

The previous prime is 402231119. The next prime is 402231157. The reversal of 402231123 is 321132204.

It is not a de Polignac number, because 402231123 - 2² = 402231119 is a prime.

It is a super-2 number, since 2×402231123² = 323579752619682258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402231096 and 402231105.

It is not an unprimeable number, because it can be changed into a prime (402231103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13758 + ... + 31523.

It is an arithmetic number, because the mean of its divisors is an integer number (21735360).

Almost surely, 2^402231123 is an apocalyptic number.

402231123 is a deficient number, since it is larger than the sum of its proper divisors (293300397).

402231123 is a wasteful number, since it uses less digits than its factorization.

402231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45344 (or 45338 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 402231123 is about 20055.7005113260. The cubic root of 402231123 is about 738.1736817742.

Adding to 402231123 its reverse (321132204), we get a palindrome (723363327).

The spelling of 402231123 in words is "four hundred two million, two hundred thirty-one thousand, one hundred twenty-three".