340403303531 has 2 divisors, whose sum is σ = 340403303532. Its totient is φ = 340403303530.

The previous prime is 340403303501. The next prime is 340403303587. The reversal of 340403303531 is 135303304043.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340403303531 - 2²² = 340399109227 is a prime.

It is a super-2 number, since 2×340403303531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340403303494 and 340403303503.

It is not a weakly prime, because it can be changed into another prime (340403303501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170201651765 + 170201651766.

It is an arithmetic number, because the mean of its divisors is an integer number (170201651766).

Almost surely, 2^340403303531 is an apocalyptic number.

340403303531 is a deficient number, since it is larger than the sum of its proper divisors (1).

340403303531 is an equidigital number, since it uses as much as digits as its factorization.

340403303531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 29.

Adding to 340403303531 its reverse (135303304043), we get a palindrome (475706607574).

The spelling of 340403303531 in words is "three hundred forty billion, four hundred three million, three hundred three thousand, five hundred thirty-one".