345124891 has 12 divisors (see below), whose sum is σ = 358623936. Its totient is φ = 332114160.

The previous prime is 345124883. The next prime is 345124903. The reversal of 345124891 is 198421543.

It is not a de Polignac number, because 345124891 - 2³ = 345124883 is a prime.

It is a super-2 number, since 2×345124891² = 238222380775523762, 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 345124891.

It is not an unprimeable number, because it can be changed into a prime (345124831) 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 11 ways as a sum of consecutive naturals, for example, 188406 + ... + 190228.

It is an arithmetic number, because the mean of its divisors is an integer number (29885328).

Almost surely, 2^345124891 is an apocalyptic number.

345124891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

345124891 is a deficient number, since it is larger than the sum of its proper divisors (13499045).

345124891 is a wasteful number, since it uses less digits than its factorization.

345124891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082 (or 2051 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 345124891 is about 18577.5372695091. The cubic root of 345124891 is about 701.4425293384.

The spelling of 345124891 in words is "three hundred forty-five million, one hundred twenty-four thousand, eight hundred ninety-one".