311431342 has 8 divisors (see below), whose sum is σ = 467239032. Its totient is φ = 155685000.

The previous prime is 311431321. The next prime is 311431349. The reversal of 311431342 is 243134113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311431349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717 + ... + 24967.

It is an arithmetic number, because the mean of its divisors is an integer number (58404879).

Almost surely, 2^311431342 is an apocalyptic number.

311431342 is a deficient number, since it is larger than the sum of its proper divisors (155807690).

311431342 is a wasteful number, since it uses less digits than its factorization.

311431342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30674.

The product of its digits is 864, while the sum is 22.

The square root of 311431342 is about 17647.4174314544. The cubic root of 311431342 is about 677.8299782802.

Adding to 311431342 its reverse (243134113), we get a palindrome (554565455).

The spelling of 311431342 in words is "three hundred eleven million, four hundred thirty-one thousand, three hundred forty-two".