231351 has 8 divisors (see below), whose sum is σ = 313344. Its totient is φ = 151800.

The previous prime is 231349. The next prime is 231359. The reversal of 231351 is 153132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231351 - 2¹ = 231349 is a prime.

231351 is a lucky number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 231351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 776.

It is an arithmetic number, because the mean of its divisors is an integer number (39168).

2²³¹³⁵¹ is an apocalyptic number.

231351 is a deficient number, since it is larger than the sum of its proper divisors (81993).

231351 is a wasteful number, since it uses less digits than its factorization.

231351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its digits is 90, while the sum is 15.

The square root of 231351 is about 480.9896048773. The cubic root of 231351 is about 61.3889860597.

Adding to 231351 its reverse (153132), we get a palindrome (384483).

The spelling of 231351 in words is "two hundred thirty-one thousand, three hundred fifty-one".