42351023311 has 4 divisors (see below), whose sum is σ = 42372339352. Its totient is φ = 42329707272.

The previous prime is 42351023263. The next prime is 42351023329. The reversal of 42351023311 is 11332015324.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42351023311 - 2²³ = 42342634703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42351023411) 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 in 3 ways as a sum of consecutive naturals, for example, 10655040 + ... + 10659013.

It is an arithmetic number, because the mean of its divisors is an integer number (10593084838).

Almost surely, 2^42351023311 is an apocalyptic number.

42351023311 is a deficient number, since it is larger than the sum of its proper divisors (21316041).

42351023311 is a wasteful number, since it uses less digits than its factorization.

42351023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21316040.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 42351023311 its reverse (11332015324), we get a palindrome (53683038635).

The spelling of 42351023311 in words is "forty-two billion, three hundred fifty-one million, twenty-three thousand, three hundred eleven".