402323402291 has 2 divisors, whose sum is σ = 402323402292. Its totient is φ = 402323402290.

The previous prime is 402323402231. The next prime is 402323402311. The reversal of 402323402291 is 192204323204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402323402291 - 2³⁰ = 401249660467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (402323402231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201161701145 + 201161701146.

It is an arithmetic number, because the mean of its divisors is an integer number (201161701146).

Almost surely, 2^402323402291 is an apocalyptic number.

402323402291 is a deficient number, since it is larger than the sum of its proper divisors (1).

402323402291 is an equidigital number, since it uses as much as digits as its factorization.

402323402291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 402323402291 its reverse (192204323204), we get a palindrome (594527725495).

The spelling of 402323402291 in words is "four hundred two billion, three hundred twenty-three million, four hundred two thousand, two hundred ninety-one".