340440231331 has 2 divisors, whose sum is σ = 340440231332. Its totient is φ = 340440231330.

The previous prime is 340440231293. The next prime is 340440231353. The reversal of 340440231331 is 133132044043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340440231331 - 2³⁷ = 203001277859 is a prime.

It is a super-2 number, since 2×340440231331² (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 340440231331.

It is not a weakly prime, because it can be changed into another prime (340440231431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170220115665 + 170220115666.

It is an arithmetic number, because the mean of its divisors is an integer number (170220115666).

Almost surely, 2^340440231331 is an apocalyptic number.

340440231331 is a deficient number, since it is larger than the sum of its proper divisors (1).

340440231331 is an equidigital number, since it uses as much as digits as its factorization.

340440231331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 340440231331 its reverse (133132044043), we get a palindrome (473572275374).

The spelling of 340440231331 in words is "three hundred forty billion, four hundred forty million, two hundred thirty-one thousand, three hundred thirty-one".