402531463 has 2 divisors, whose sum is σ = 402531464. Its totient is φ = 402531462.

The previous prime is 402531439. The next prime is 402531509. The reversal of 402531463 is 364135204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402531463 - 2⁹ = 402530951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402531403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201265731 + 201265732.

It is an arithmetic number, because the mean of its divisors is an integer number (201265732).

Almost surely, 2^402531463 is an apocalyptic number.

402531463 is a deficient number, since it is larger than the sum of its proper divisors (1).

402531463 is an equidigital number, since it uses as much as digits as its factorization.

402531463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 402531463 is about 20063.1867608314. The cubic root of 402531463 is about 738.3573638357.

Adding to 402531463 its reverse (364135204), we get a palindrome (766666667).

The spelling of 402531463 in words is "four hundred two million, five hundred thirty-one thousand, four hundred sixty-three".