402144502231 has 2 divisors, whose sum is σ = 402144502232. Its totient is φ = 402144502230.

The previous prime is 402144502153. The next prime is 402144502237. The reversal of 402144502231 is 132205441204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402144502231 - 2⁷ = 402144502103 is a prime.

It is a super-2 number, since 2×402144502231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402144502231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402144502237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072251115 + 201072251116.

It is an arithmetic number, because the mean of its divisors is an integer number (201072251116).

Almost surely, 2^402144502231 is an apocalyptic number.

402144502231 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144502231 is an equidigital number, since it uses as much as digits as its factorization.

402144502231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 402144502231 its reverse (132205441204), we get a palindrome (534349943435).

The spelling of 402144502231 in words is "four hundred two billion, one hundred forty-four million, five hundred two thousand, two hundred thirty-one".