420351131 has 2 divisors, whose sum is σ = 420351132. Its totient is φ = 420351130.

The previous prime is 420351121. The next prime is 420351181. The reversal of 420351131 is 131153024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420351131 - 2⁶ = 420351067 is a prime.

It is a super-2 number, since 2×420351131² = 353390146665958322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420351121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210175565 + 210175566.

It is an arithmetic number, because the mean of its divisors is an integer number (210175566).

Almost surely, 2^420351131 is an apocalyptic number.

420351131 is a deficient number, since it is larger than the sum of its proper divisors (1).

420351131 is an equidigital number, since it uses as much as digits as its factorization.

420351131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 420351131 is about 20502.4664613797. The cubic root of 420351131 is about 749.0958770387.

The spelling of 420351131 in words is "four hundred twenty million, three hundred fifty-one thousand, one hundred thirty-one".