345130421 has 12 divisors (see below), whose sum is σ = 376272000. Its totient is φ = 315676368.

The previous prime is 345130411. The next prime is 345130439. The reversal of 345130421 is 124031543.

It is not a de Polignac number, because 345130421 - 2¹⁴ = 345114037 is a prime.

It is a super-3 number, since 3×345130421³ (a number of 27 digits) contains 333 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 (345130411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5180 + ... + 26778.

It is an arithmetic number, because the mean of its divisors is an integer number (31356000).

Almost surely, 2^345130421 is an apocalyptic number.

It is an amenable number.

345130421 is a deficient number, since it is larger than the sum of its proper divisors (31141579).

345130421 is a wasteful number, since it uses less digits than its factorization.

345130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21676 (or 21647 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 345130421 is about 18577.6861045718. The cubic root of 345130421 is about 701.4462757662.

Adding to 345130421 its reverse (124031543), we get a palindrome (469161964).

The spelling of 345130421 in words is "three hundred forty-five million, one hundred thirty thousand, four hundred twenty-one".