311022342 has 20 divisors (see below), whose sum is σ = 696920796. Its totient is φ = 103674060.

The previous prime is 311022319. The next prime is 311022389. The reversal of 311022342 is 243220113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 959784 + ... + 960107.

Almost surely, 2^311022342 is an apocalyptic number.

311022342 is an abundant number, since it is smaller than the sum of its proper divisors (385898454).

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

311022342 is a wasteful number, since it uses less digits than its factorization.

311022342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919905 (or 1919896 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 311022342 is about 17635.8255264674. The cubic root of 311022342 is about 677.5331189358.

Adding to 311022342 its reverse (243220113), we get a palindrome (554242455).

It can be divided in two parts, 3110223 and 42, that multiplied together give a triangular number (130629366 = T₁₆₁₆₃).

The spelling of 311022342 in words is "three hundred eleven million, twenty-two thousand, three hundred forty-two".