402134431187 has 2 divisors, whose sum is σ = 402134431188. Its totient is φ = 402134431186.

The previous prime is 402134431151. The next prime is 402134431207. The reversal of 402134431187 is 781134431204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402134431187 - 2¹⁰ = 402134430163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402134431187.

It is not a weakly prime, because it can be changed into another prime (402134431087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201067215593 + 201067215594.

It is an arithmetic number, because the mean of its divisors is an integer number (201067215594).

Almost surely, 2^402134431187 is an apocalyptic number.

402134431187 is a deficient number, since it is larger than the sum of its proper divisors (1).

402134431187 is an equidigital number, since it uses as much as digits as its factorization.

402134431187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 402134431187 in words is "four hundred two billion, one hundred thirty-four million, four hundred thirty-one thousand, one hundred eighty-seven".