231122465 has 12 divisors (see below), whose sum is σ = 322628436. Its totient is φ = 158483808.

The previous prime is 231122459. The next prime is 231122467. The reversal of 231122465 is 564221132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 164275489 + 66846976 = 12817^2 + 8176^2 .

It is not a de Polignac number, because 231122465 - 2¹⁴ = 231106081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231122467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471434 + ... + 471923.

It is an arithmetic number, because the mean of its divisors is an integer number (26885703).

Almost surely, 2^231122465 is an apocalyptic number.

It is an amenable number.

231122465 is a deficient number, since it is larger than the sum of its proper divisors (91505971).

231122465 is an equidigital number, since it uses as much as digits as its factorization.

231122465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943376 (or 943369 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 231122465 is about 15202.7124224594. The cubic root of 231122465 is about 613.6876547990.

Adding to 231122465 its reverse (564221132), we get a palindrome (795343597).

The spelling of 231122465 in words is "two hundred thirty-one million, one hundred twenty-two thousand, four hundred sixty-five".