33431304340 has 24 divisors (see below), whose sum is σ = 80235130752. Its totient is φ = 11462161440.

The previous prime is 33431304307. The next prime is 33431304353. The reversal of 33431304340 is 4340313433.

It is a happy number.

It is a super-2 number, since 2×33431304340² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 33431304299 and 33431304308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119397376 + ... + 119397655.

It is an arithmetic number, because the mean of its divisors is an integer number (3343130448).

Almost surely, 2^33431304340 is an apocalyptic number.

It is an amenable number.

33431304340 is an abundant number, since it is smaller than the sum of its proper divisors (46803826412).

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

33431304340 is a wasteful number, since it uses less digits than its factorization.

33431304340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238795047 (or 238795045 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 33431304340 its reverse (4340313433), we get a palindrome (37771617773).

The spelling of 33431304340 in words is "thirty-three billion, four hundred thirty-one million, three hundred four thousand, three hundred forty".