323131722498225 has 81 divisors (see below), whose sum is σ = 581150214468993. Its totient is φ = 171629532426240.

The previous prime is 323131722498203. The next prime is 323131722498271. The reversal of 323131722498225 is 522894227131323.

The square root of 323131722498225 is 17975865.

It is a perfect power (a square), and thus also a powerful number.

323131722498225 is a `hidden beast` number, since 3 + 2 + 3 + 1 + 3 + 172 + 249 + 8 + 225 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 79405796246049 + 243725926252176 = 8910993^2 + 15611724^2 .

It is not a de Polignac number, because 323131722498225 - 2⁹ = 323131722497713 is a prime.

It is a super-2 number, since 2×323131722498225² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 69296957244 + ... + 69296961906.

Almost surely, 2^{323131722498225} is an apocalyptic number.

323131722498225 is the 17975865-th square number.

323131722498225 is the 8987933-rd centered octagonal number.

It is an amenable number.

323131722498225 is a deficient number, since it is larger than the sum of its proper divisors (258018491970768).

323131722498225 is an frugal number, since it uses more digits than its factorization.

323131722498225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856 (or 4928 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 323131722498225 in words is "three hundred twenty-three trillion, one hundred thirty-one billion, seven hundred twenty-two million, four hundred ninety-eight thousand, two hundred twenty-five".