402303134231 has 2 divisors, whose sum is σ = 402303134232. Its totient is φ = 402303134230.

The previous prime is 402303134213. The next prime is 402303134243. The reversal of 402303134231 is 132431303204.

Together with previous prime (402303134213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402303134231 - 2²² = 402298939927 is a prime.

It is a super-2 number, since 2×402303134231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402303134231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402303434231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201151567115 + 201151567116.

It is an arithmetic number, because the mean of its divisors is an integer number (201151567116).

Almost surely, 2^402303134231 is an apocalyptic number.

402303134231 is a deficient number, since it is larger than the sum of its proper divisors (1).

402303134231 is an equidigital number, since it uses as much as digits as its factorization.

402303134231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 402303134231 its reverse (132431303204), we get a palindrome (534734437435).

The spelling of 402303134231 in words is "four hundred two billion, three hundred three million, one hundred thirty-four thousand, two hundred thirty-one".