402031027 has 2 divisors, whose sum is σ = 402031028. Its totient is φ = 402031026.

The previous prime is 402030983. The next prime is 402031043. The reversal of 402031027 is 720130204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402031027 - 2²³ = 393642419 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 402030995 and 402031013.

It is not a weakly prime, because it can be changed into another prime (402031057) 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, 201015513 + 201015514.

It is an arithmetic number, because the mean of its divisors is an integer number (201015514).

Almost surely, 2^402031027 is an apocalyptic number.

402031027 is a deficient number, since it is larger than the sum of its proper divisors (1).

402031027 is an equidigital number, since it uses as much as digits as its factorization.

402031027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 402031027 is about 20050.7113838886. The cubic root of 402031027 is about 738.0512562232.

The spelling of 402031027 in words is "four hundred two million, thirty-one thousand, twenty-seven".