400235466134531 has 2 divisors, whose sum is σ = 400235466134532. Its totient is φ = 400235466134530.

The previous prime is 400235466134461. The next prime is 400235466134591. The reversal of 400235466134531 is 135431664532004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400235466134531 - 2¹⁸ = 400235465872387 is a prime.

It is a super-2 number, since 2×400235466134531² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400235466134591) 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, 200117733067265 + 200117733067266.

It is an arithmetic number, because the mean of its divisors is an integer number (200117733067266).

Almost surely, 2^{400235466134531} is an apocalyptic number.

400235466134531 is a deficient number, since it is larger than the sum of its proper divisors (1).

400235466134531 is an equidigital number, since it uses as much as digits as its factorization.

400235466134531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 400235466134531 in words is "four hundred trillion, two hundred thirty-five billion, four hundred sixty-six million, one hundred thirty-four thousand, five hundred thirty-one".