311030042040 has 96 divisors (see below), whose sum is σ = 1011059543520. Its totient is φ = 82923957504.

The previous prime is 311030042039. The next prime is 311030042051. The reversal of 311030042040 is 40240030113.

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 23 ways as a sum of consecutive naturals, for example, 1676974 + ... + 1853186.

It is an arithmetic number, because the mean of its divisors is an integer number (10531870245).

Almost surely, 2^311030042040 is an apocalyptic number.

311030042040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311030042040 is an abundant number, since it is smaller than the sum of its proper divisors (700029501480).

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

311030042040 is a wasteful number, since it uses less digits than its factorization.

311030042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181133 (or 181126 counting only the distinct ones).

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

Adding to 311030042040 its reverse (40240030113), we get a palindrome (351270072153).

The spelling of 311030042040 in words is "three hundred eleven billion, thirty million, forty-two thousand, forty".