311432345 has 16 divisors (see below), whose sum is σ = 431258880. Its totient is φ = 211477824.

The previous prime is 311432339. The next prime is 311432353. The reversal of 311432345 is 543234113.

It is a cyclic number.

It is not a de Polignac number, because 311432345 - 2¹⁰ = 311431321 is a prime.

It is a Curzon number.

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, 39590 + ... + 46799.

It is an arithmetic number, because the mean of its divisors is an integer number (26953680).

Almost surely, 2^311432345 is an apocalyptic number.

311432345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

311432345 is a deficient number, since it is larger than the sum of its proper divisors (119826535).

311432345 is a wasteful number, since it uses less digits than its factorization.

311432345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86504.

The product of its digits is 4320, while the sum is 26.

The square root of 311432345 is about 17647.4458491874. The cubic root of 311432345 is about 677.8307059556.

Adding to 311432345 its reverse (543234113), we get a palindrome (854666458).

The spelling of 311432345 in words is "three hundred eleven million, four hundred thirty-two thousand, three hundred forty-five".