345023140 has 48 divisors (see below), whose sum is σ = 903337344. Its totient is φ = 107539200.

The previous prime is 345023131. The next prime is 345023153. The reversal of 345023140 is 41320543.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110481 + ... + 113560.

It is an arithmetic number, because the mean of its divisors is an integer number (18819528).

Almost surely, 2^345023140 is an apocalyptic number.

It is an amenable number.

345023140 is an abundant number, since it is smaller than the sum of its proper divisors (558314204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345023140 is a wasteful number, since it uses less digits than its factorization.

345023140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224068 (or 224066 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 345023140 is about 18574.7985184228. The cubic root of 345023140 is about 701.3735886004.

Adding to 345023140 its reverse (41320543), we get a palindrome (386343683).

The spelling of 345023140 in words is "three hundred forty-five million, twenty-three thousand, one hundred forty".