231513351 has 16 divisors (see below), whose sum is σ = 321461760. Its totient is φ = 148024800.

The previous prime is 231513313. The next prime is 231513353. The reversal of 231513351 is 153315132.

It is not a de Polignac number, because 231513351 - 2¹³ = 231505159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231513353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4326 + ... + 21948.

It is an arithmetic number, because the mean of its divisors is an integer number (20091360).

Almost surely, 2^231513351 is an apocalyptic number.

231513351 is a deficient number, since it is larger than the sum of its proper divisors (89948409).

231513351 is a wasteful number, since it uses less digits than its factorization.

231513351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17806.

The product of its digits is 1350, while the sum is 24.

The square root of 231513351 is about 15215.5627894600. The cubic root of 231513351 is about 614.0334264748.

Adding to 231513351 its reverse (153315132), we get a palindrome (384828483).

The spelling of 231513351 in words is "two hundred thirty-one million, five hundred thirteen thousand, three hundred fifty-one".