345531012 has 24 divisors (see below), whose sum is σ = 828030336. Its totient is φ = 112063968.

The previous prime is 345531007. The next prime is 345531037. The reversal of 345531012 is 210135543.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388668 + ... + 389555.

It is an arithmetic number, because the mean of its divisors is an integer number (34501264).

Almost surely, 2^345531012 is an apocalyptic number.

It is an amenable number.

345531012 is an abundant number, since it is smaller than the sum of its proper divisors (482499324).

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

345531012 is a wasteful number, since it uses less digits than its factorization.

345531012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778267 (or 778265 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 345531012 is about 18588.4644874180. The cubic root of 345531012 is about 701.7175591249.

Adding to 345531012 its reverse (210135543), we get a palindrome (555666555).

The spelling of 345531012 in words is "three hundred forty-five million, five hundred thirty-one thousand, twelve".