231411573 has 14 divisors (see below), whose sum is σ = 346959734. Its totient is φ = 154273896.

The previous prime is 231411571. The next prime is 231411581. The reversal of 231411573 is 375114132.

It can be written as a sum of positive squares in only one way, i.e., 217326564 + 14085009 = 14742^2 + 3753^2 .

It is not a de Polignac number, because 231411573 - 2¹ = 231411571 is a prime.

It is a super-2 number, since 2×231411573² = 107102632236668658, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231411571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 157990 + ... + 159447.

Almost surely, 2^231411573 is an apocalyptic number.

It is an amenable number.

231411573 is a deficient number, since it is larger than the sum of its proper divisors (115548161).

231411573 is an frugal number, since it uses more digits than its factorization.

231411573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317455 (or 317440 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 231411573 is about 15212.2178856339. The cubic root of 231411573 is about 613.9434327385.

The spelling of 231411573 in words is "two hundred thirty-one million, four hundred eleven thousand, five hundred seventy-three".