43451831342 has 4 divisors (see below), whose sum is σ = 65177747016. Its totient is φ = 21725915670.

The previous prime is 43451831341. The next prime is 43451831359. The reversal of 43451831342 is 24313815434.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×43451831342² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43451831296 and 43451831305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43451831341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10862957834 + ... + 10862957837.

It is an arithmetic number, because the mean of its divisors is an integer number (16294436754).

Almost surely, 2^43451831342 is an apocalyptic number.

43451831342 is a deficient number, since it is larger than the sum of its proper divisors (21725915674).

43451831342 is a wasteful number, since it uses less digits than its factorization.

43451831342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21725915673.

The product of its digits is 138240, while the sum is 38.

The spelling of 43451831342 in words is "forty-three billion, four hundred fifty-one million, eight hundred thirty-one thousand, three hundred forty-two".