402067144231 has 4 divisors (see below), whose sum is σ = 402615667672. Its totient is φ = 401518620792.

The previous prime is 402067144189. The next prime is 402067144253. The reversal of 402067144231 is 132441760204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 402067144231 - 2²¹ = 402065047079 is a prime.

It is a super-2 number, since 2×402067144231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402067144261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274260621 + ... + 274262086.

It is an arithmetic number, because the mean of its divisors is an integer number (100653916918).

Almost surely, 2^402067144231 is an apocalyptic number.

402067144231 is a deficient number, since it is larger than the sum of its proper divisors (548523441).

402067144231 is an equidigital number, since it uses as much as digits as its factorization.

402067144231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548523440.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 402067144231 in words is "four hundred two billion, sixty-seven million, one hundred forty-four thousand, two hundred thirty-one".