311431042 has 8 divisors (see below), whose sum is σ = 503080956. Its totient is φ = 143737392.

The previous prime is 311431037. The next prime is 311431091. The reversal of 311431042 is 240134113.

It can be written as a sum of positive squares in 2 ways, for example, as 309795201 + 1635841 = 17601^2 + 1279^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5989033 + ... + 5989084.

Almost surely, 2^311431042 is an apocalyptic number.

311431042 is a deficient number, since it is larger than the sum of its proper divisors (191649914).

311431042 is a wasteful number, since it uses less digits than its factorization.

311431042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11978132.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 311431042 is about 17647.4089316251. The cubic root of 311431042 is about 677.8297606303.

Adding to 311431042 its reverse (240134113), we get a palindrome (551565155).

The spelling of 311431042 in words is "three hundred eleven million, four hundred thirty-one thousand, forty-two".