402663031 has 2 divisors, whose sum is σ = 402663032. Its totient is φ = 402663030.

The previous prime is 402662993. The next prime is 402663049. The reversal of 402663031 is 130366204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402663031 - 2⁷ = 402662903 is a prime.

It is a super-2 number, since 2×402663031² = 324275033068213922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402662987 and 402663005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402663431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201331515 + 201331516.

It is an arithmetic number, because the mean of its divisors is an integer number (201331516).

Almost surely, 2^402663031 is an apocalyptic number.

402663031 is a deficient number, since it is larger than the sum of its proper divisors (1).

402663031 is an equidigital number, since it uses as much as digits as its factorization.

402663031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 402663031 is about 20066.4653339845. The cubic root of 402663031 is about 738.4377994692.

The spelling of 402663031 in words is "four hundred two million, six hundred sixty-three thousand, thirty-one".