231354321152 has 18 divisors (see below), whose sum is σ = 461804914998. Its totient is φ = 115677160448.

The previous prime is 231354321151. The next prime is 231354321197. The reversal of 231354321152 is 251123453132.

It can be written as a sum of positive squares in only one way, i.e., 120981534976 + 110372786176 = 347824^2 + 332224^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (231354321151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451863653 + ... + 451864164.

It is an arithmetic number, because the mean of its divisors is an integer number (25655828611).

Almost surely, 2^231354321152 is an apocalyptic number.

It is an amenable number.

231354321152 is a deficient number, since it is larger than the sum of its proper divisors (230450593846).

231354321152 is an frugal number, since it uses more digits than its factorization.

231354321152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903727833 (or 903727819 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

Adding to 231354321152 its reverse (251123453132), we get a palindrome (482477774284).

The spelling of 231354321152 in words is "two hundred thirty-one billion, three hundred fifty-four million, three hundred twenty-one thousand, one hundred fifty-two".