231374532644 has 12 divisors (see below), whose sum is σ = 414781174668. Its totient is φ = 112865625600.

The previous prime is 231374532643. The next prime is 231374532661. The reversal of 231374532644 is 446235473132.

It can be written as a sum of positive squares in 2 ways, for example, as 20840387044 + 210534145600 = 144362^2 + 458840^2 .

It is a super-3 number, since 3×231374532644³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231374532595 and 231374532604.

It is not an unprimeable number, because it can be changed into a prime (231374532643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705409997 + ... + 705410324.

It is an arithmetic number, because the mean of its divisors is an integer number (34565097889).

Almost surely, 2^231374532644 is an apocalyptic number.

It is an amenable number.

231374532644 is a deficient number, since it is larger than the sum of its proper divisors (183406642024).

231374532644 is a wasteful number, since it uses less digits than its factorization.

231374532644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410820366 (or 1410820364 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 44.

The spelling of 231374532644 in words is "two hundred thirty-one billion, three hundred seventy-four million, five hundred thirty-two thousand, six hundred forty-four".