231144015332 has 6 divisors (see below), whose sum is σ = 404502026838. Its totient is φ = 115572007664.

The previous prime is 231144015293. The next prime is 231144015341. The reversal of 231144015332 is 233510441132.

It can be written as a sum of positive squares in only one way, i.e., 174568538596 + 56575476736 = 417814^2 + 237856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231144015295 and 231144015304.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28893001913 + ... + 28893001920.

It is an arithmetic number, because the mean of its divisors is an integer number (67417004473).

Almost surely, 2^231144015332 is an apocalyptic number.

It is an amenable number.

231144015332 is a deficient number, since it is larger than the sum of its proper divisors (173358011506).

231144015332 is a wasteful number, since it uses less digits than its factorization.

231144015332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57786003837 (or 57786003835 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 231144015332 its reverse (233510441132), we get a palindrome (464654456464).

The spelling of 231144015332 in words is "two hundred thirty-one billion, one hundred forty-four million, fifteen thousand, three hundred thirty-two".