402144102331 has 2 divisors, whose sum is σ = 402144102332. Its totient is φ = 402144102330.

The previous prime is 402144102329. The next prime is 402144102383. The reversal of 402144102331 is 133201441204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402144102331 - 2¹ = 402144102329 is a prime.

It is a super-2 number, since 2×402144102331² (a number of 24 digits) contains 22 as substring.

Together with 402144102329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 402144102296 and 402144102305.

It is not a weakly prime, because it can be changed into another prime (402144102391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072051165 + 201072051166.

It is an arithmetic number, because the mean of its divisors is an integer number (201072051166).

Almost surely, 2^402144102331 is an apocalyptic number.

402144102331 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144102331 is an equidigital number, since it uses as much as digits as its factorization.

402144102331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 402144102331 its reverse (133201441204), we get a palindrome (535345543535).

The spelling of 402144102331 in words is "four hundred two billion, one hundred forty-four million, one hundred two thousand, three hundred thirty-one".