345121390 has 16 divisors (see below), whose sum is σ = 623434320. Its totient is φ = 137556160.

The previous prime is 345121349. The next prime is 345121391. The reversal of 345121390 is 93121543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345121391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58600 + ... + 64219.

It is an arithmetic number, because the mean of its divisors is an integer number (38964645).

Almost surely, 2^345121390 is an apocalyptic number.

345121390 is a deficient number, since it is larger than the sum of its proper divisors (278312930).

345121390 is a wasteful number, since it uses less digits than its factorization.

345121390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123107.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 345121390 is about 18577.4430425718. The cubic root of 345121390 is about 701.4401574834.

The spelling of 345121390 in words is "three hundred forty-five million, one hundred twenty-one thousand, three hundred ninety".