340312546391 has 2 divisors, whose sum is σ = 340312546392. Its totient is φ = 340312546390.

The previous prime is 340312546367. The next prime is 340312546417. The reversal of 340312546391 is 193645213043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340312546391 - 2²⁶ = 340245437527 is a prime.

It is a super-2 number, since 2×340312546391² (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 (340312546291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170156273195 + 170156273196.

It is an arithmetic number, because the mean of its divisors is an integer number (170156273196).

Almost surely, 2^340312546391 is an apocalyptic number.

340312546391 is a deficient number, since it is larger than the sum of its proper divisors (1).

340312546391 is an equidigital number, since it uses as much as digits as its factorization.

340312546391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 340312546391 in words is "three hundred forty billion, three hundred twelve million, five hundred forty-six thousand, three hundred ninety-one".