402323210231 has 2 divisors, whose sum is σ = 402323210232. Its totient is φ = 402323210230.

The previous prime is 402323210207. The next prime is 402323210239. The reversal of 402323210231 is 132012323204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402323210231 - 2⁶ = 402323210167 is a prime.

It is a super-2 number, since 2×402323210231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402323210197 and 402323210206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402323210239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201161605115 + 201161605116.

It is an arithmetic number, because the mean of its divisors is an integer number (201161605116).

Almost surely, 2^402323210231 is an apocalyptic number.

402323210231 is a deficient number, since it is larger than the sum of its proper divisors (1).

402323210231 is an equidigital number, since it uses as much as digits as its factorization.

402323210231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 402323210231 its reverse (132012323204), we get a palindrome (534335533435).

The spelling of 402323210231 in words is "four hundred two billion, three hundred twenty-three million, two hundred ten thousand, two hundred thirty-one".