340545325391 has 4 divisors (see below), whose sum is σ = 340574993352. Its totient is φ = 340515657432.

The previous prime is 340545325349. The next prime is 340545325399. The reversal of 340545325391 is 193523545043.

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 340545325391 - 2¹⁸ = 340545063247 is a prime.

It is a super-2 number, since 2×340545325391² (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 (340545325399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14816756 + ... + 14839721.

It is an arithmetic number, because the mean of its divisors is an integer number (85143748338).

Almost surely, 2^340545325391 is an apocalyptic number.

340545325391 is a deficient number, since it is larger than the sum of its proper divisors (29667961).

340545325391 is a wasteful number, since it uses less digits than its factorization.

340545325391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29667960.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 340545325391 in words is "three hundred forty billion, five hundred forty-five million, three hundred twenty-five thousand, three hundred ninety-one".