402034231 has 4 divisors (see below), whose sum is σ = 402205464. Its totient is φ = 401863000.

The previous prime is 402034189. The next prime is 402034249. The reversal of 402034231 is 132430204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402034231 - 2¹⁵ = 402001463 is a prime.

It is a super-2 number, since 2×402034231² = 323263045791522722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402034199 and 402034208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402034261) 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 3 ways as a sum of consecutive naturals, for example, 82045 + ... + 86806.

It is an arithmetic number, because the mean of its divisors is an integer number (100551366).

Almost surely, 2^402034231 is an apocalyptic number.

402034231 is a deficient number, since it is larger than the sum of its proper divisors (171233).

402034231 is a wasteful number, since it uses less digits than its factorization.

402034231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171232.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402034231 is about 20050.7912811440. The cubic root of 402034231 is about 738.0532168595.

Adding to 402034231 its reverse (132430204), we get a palindrome (534464435).

The spelling of 402034231 in words is "four hundred two million, thirty-four thousand, two hundred thirty-one".