42232145431 has 24 divisors (see below), whose sum is σ = 50379419904. Its totient is φ = 35279964720.

The previous prime is 42232145413. The next prime is 42232145503. The reversal of 42232145431 is 13454123224.

It is not a de Polignac number, because 42232145431 - 2³⁵ = 7872407063 is a prime.

It is a super-2 number, since 2×42232145431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42232145393 and 42232145402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42232145411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 953896 + ... + 997186.

It is an arithmetic number, because the mean of its divisors is an integer number (2099142496).

Almost surely, 2^42232145431 is an apocalyptic number.

42232145431 is a deficient number, since it is larger than the sum of its proper divisors (8147274473).

42232145431 is a wasteful number, since it uses less digits than its factorization.

42232145431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43811 (or 43804 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

Adding to 42232145431 its reverse (13454123224), we get a palindrome (55686268655).

The spelling of 42232145431 in words is "forty-two billion, two hundred thirty-two million, one hundred forty-five thousand, four hundred thirty-one".