345578931032831 has 4 divisors (see below), whose sum is σ = 347388244808064. Its totient is φ = 343769617257600.

The previous prime is 345578931032821. The next prime is 345578931032861. The reversal of 345578931032831 is 138230139875543.

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 345578931032831 - 2¹⁴ = 345578931016447 is a prime.

It is a super-2 number, since 2×345578931032831² (a number of 30 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 (345578931032821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904656887330 + ... + 904656887711.

It is an arithmetic number, because the mean of its divisors is an integer number (86847061202016).

Almost surely, 2^{345578931032831} is an apocalyptic number.

345578931032831 is a deficient number, since it is larger than the sum of its proper divisors (1809313775233).

345578931032831 is a wasteful number, since it uses less digits than its factorization.

345578931032831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809313775232.

The product of its (nonzero) digits is 65318400, while the sum is 62.

The spelling of 345578931032831 in words is "three hundred forty-five trillion, five hundred seventy-eight billion, nine hundred thirty-one million, thirty-two thousand, eight hundred thirty-one".