345311400 has 96 divisors (see below), whose sum is σ = 1223403840. Its totient is φ = 78927360.

The previous prime is 345311399. The next prime is 345311437. The reversal of 345311400 is 4113543.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36909 + ... + 45308.

It is an arithmetic number, because the mean of its divisors is an integer number (12743790).

Almost surely, 2^345311400 is an apocalyptic number.

345311400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345311400 is an abundant number, since it is smaller than the sum of its proper divisors (878092440).

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

345311400 is a wasteful number, since it uses less digits than its factorization.

345311400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82243 (or 82234 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 345311400 is about 18582.5563365216. The cubic root of 345311400 is about 701.5688621421.

Adding to 345311400 its reverse (4113543), we get a palindrome (349424943).

The spelling of 345311400 in words is "three hundred forty-five million, three hundred eleven thousand, four hundred".