42312213243231 has 16 divisors (see below), whose sum is σ = 59386159347840. Its totient is φ = 26723234495520.

The previous prime is 42312213243227. The next prime is 42312213243253. The reversal of 42312213243231 is 13234231221324.

It is a happy number.

It is not a de Polignac number, because 42312213243231 - 2² = 42312213243227 is a prime.

It is a super-2 number, since 2×42312213243231² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42312213243192 and 42312213243201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312213243271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068416 + ... + 9428826.

It is an arithmetic number, because the mean of its divisors is an integer number (3711634959240).

Almost surely, 2^{42312213243231} is an apocalyptic number.

42312213243231 is a deficient number, since it is larger than the sum of its proper divisors (17073946104609).

42312213243231 is a wasteful number, since it uses less digits than its factorization.

42312213243231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461286.

The product of its digits is 41472, while the sum is 33.

Adding to 42312213243231 its reverse (13234231221324), we get a palindrome (55546444464555).

The spelling of 42312213243231 in words is "forty-two trillion, three hundred twelve billion, two hundred thirteen million, two hundred forty-three thousand, two hundred thirty-one".