345115331 has 4 divisors (see below), whose sum is σ = 376489464. Its totient is φ = 313741200.

The previous prime is 345115307. The next prime is 345115349. The reversal of 345115331 is 133511543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133511543 = 11 ⋅12137413.

It is a cyclic number.

It is not a de Polignac number, because 345115331 - 2¹⁰ = 345114307 is a prime.

It is a super-2 number, since 2×345115331² = 238209183382479122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345115331.

It is not an unprimeable number, because it can be changed into a prime (345115301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15687050 + ... + 15687071.

It is an arithmetic number, because the mean of its divisors is an integer number (94122366).

Almost surely, 2^345115331 is an apocalyptic number.

345115331 is a deficient number, since it is larger than the sum of its proper divisors (31374133).

345115331 is a wasteful number, since it uses less digits than its factorization.

345115331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31374132.

The product of its digits is 2700, while the sum is 26.

The square root of 345115331 is about 18577.2799677455. The cubic root of 345115331 is about 701.4360525984.

Adding to 345115331 its reverse (133511543), we get a palindrome (478626874).

The spelling of 345115331 in words is "three hundred forty-five million, one hundred fifteen thousand, three hundred thirty-one".