231261416 has 16 divisors (see below), whose sum is σ = 433874340. Its totient is φ = 115561600.

The previous prime is 231261397. The next prime is 231261449. The reversal of 231261416 is 614162132.

It can be written as a sum of positive squares in 2 ways, for example, as 193488100 + 37773316 = 13910^2 + 6146^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7316 + ... + 22716.

Almost surely, 2^231261416 is an apocalyptic number.

It is an amenable number.

231261416 is a deficient number, since it is larger than the sum of its proper divisors (202612924).

231261416 is a wasteful number, since it uses less digits than its factorization.

231261416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284 (or 17280 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 231261416 is about 15207.2816768810. The cubic root of 231261416 is about 613.8106133215.

It can be divided in two parts, 23126 and 1416, that added together give a palindrome (24542).

The spelling of 231261416 in words is "two hundred thirty-one million, two hundred sixty-one thousand, four hundred sixteen".