345131660 has 12 divisors (see below), whose sum is σ = 724776528. Its totient is φ = 138052656.

The previous prime is 345131653. The next prime is 345131681. The reversal of 345131660 is 66131543.

It is a happy number.

345131660 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×345131660³ (a number of 27 digits) contains 333 as substring.

345131660 is strictly pandigital in base 9.

It is an unprimeable number.

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, 8628272 + ... + 8628311.

It is an arithmetic number, because the mean of its divisors is an integer number (60398044).

Almost surely, 2^345131660 is an apocalyptic number.

It is an amenable number.

345131660 is an abundant number, since it is smaller than the sum of its proper divisors (379644868).

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

345131660 is a wasteful number, since it uses less digits than its factorization.

345131660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17256592 (or 17256590 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 345131660 is about 18577.7194509983. The cubic root of 345131660 is about 701.4471151502.

The spelling of 345131660 in words is "three hundred forty-five million, one hundred thirty-one thousand, six hundred sixty".