345545401440331 has 4 divisors (see below), whose sum is σ = 345550763869200. Its totient is φ = 345540039011464.

The previous prime is 345545401440247. The next prime is 345545401440373. The reversal of 345545401440331 is 133044104545543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345545401440331 is a prime.

It is a super-2 number, since 2×345545401440331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345545401440731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2681117776 + ... + 2681246653.

It is an arithmetic number, because the mean of its divisors is an integer number (86387690967300).

Almost surely, 2^{345545401440331} is an apocalyptic number.

345545401440331 is a deficient number, since it is larger than the sum of its proper divisors (5362428869).

345545401440331 is an equidigital number, since it uses as much as digits as its factorization.

345545401440331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362428868.

The product of its (nonzero) digits is 3456000, while the sum is 46.

Adding to 345545401440331 its reverse (133044104545543), we get a palindrome (478589505985874).

The spelling of 345545401440331 in words is "three hundred forty-five trillion, five hundred forty-five billion, four hundred one million, four hundred forty thousand, three hundred thirty-one".