231146413 has 4 divisors (see below), whose sum is σ = 232183168. Its totient is φ = 230109660.

The previous prime is 231146411. The next prime is 231146453. The reversal of 231146413 is 314641132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231146413 - 2¹ = 231146411 is a prime.

It is the 15204-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231146411) by changing a digit.

It is a nontrivial repunit in base 15203.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518043 + ... + 518488.

It is an arithmetic number, because the mean of its divisors is an integer number (58045792).

Almost surely, 2^231146413 is an apocalyptic number.

It is an amenable number.

231146413 is a deficient number, since it is larger than the sum of its proper divisors (1036755).

231146413 is a wasteful number, since it uses less digits than its factorization.

231146413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036754.

The product of its digits is 1728, while the sum is 25.

The square root of 231146413 is about 15203.5000246654. The cubic root of 231146413 is about 613.7088500333.

Adding to 231146413 its reverse (314641132), we get a palindrome (545787545).

The spelling of 231146413 in words is "two hundred thirty-one million, one hundred forty-six thousand, four hundred thirteen".