2231631642 has 16 divisors (see below), whose sum is σ = 4466174400. Its totient is φ = 743392032.

The previous prime is 2231631641. The next prime is 2231631659. The reversal of 2231631642 is 2461361322.

2231631642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2231631642³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231631641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111267 + ... + 129782.

It is an arithmetic number, because the mean of its divisors is an integer number (279135900).

Almost surely, 2^2231631642 is an apocalyptic number.

2231631642 is an abundant number, since it is smaller than the sum of its proper divisors (2234542758).

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

2231631642 is a wasteful number, since it uses less digits than its factorization.

2231631642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242597.

The product of its digits is 10368, while the sum is 30.

The square root of 2231631642 is about 47240.1486238136. The cubic root of 2231631642 is about 1306.7951185530.

Adding to 2231631642 its reverse (2461361322), we get a palindrome (4692992964).

The spelling of 2231631642 in words is "two billion, two hundred thirty-one million, six hundred thirty-one thousand, six hundred forty-two".