401342431109 has 2 divisors, whose sum is σ = 401342431110. Its totient is φ = 401342431108.

The previous prime is 401342431099. The next prime is 401342431129. The reversal of 401342431109 is 901134243104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289169685025 + 112172746084 = 537745^2 + 334922^2 .

It is a cyclic number.

It is not a de Polignac number, because 401342431109 - 2¹⁶ = 401342365573 is a prime.

It is a super-2 number, since 2×401342431109² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401342431129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200671215554 + 200671215555.

It is an arithmetic number, because the mean of its divisors is an integer number (200671215555).

Almost surely, 2^401342431109 is an apocalyptic number.

It is an amenable number.

401342431109 is a deficient number, since it is larger than the sum of its proper divisors (1).

401342431109 is an equidigital number, since it uses as much as digits as its factorization.

401342431109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 401342431109 in words is "four hundred one billion, three hundred forty-two million, four hundred thirty-one thousand, one hundred nine".