231113251 has 8 divisors (see below), whose sum is σ = 234178560. Its totient is φ = 228054792.

The previous prime is 231113243. The next prime is 231113257. The reversal of 231113251 is 152311132.

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

It is a cyclic number.

It is not a de Polignac number, because 231113251 - 2³ = 231113243 is a prime.

It is a super-3 number, since 3×231113251³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231113257) 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, 130510 + ... + 132268.

It is an arithmetic number, because the mean of its divisors is an integer number (29272320).

Almost surely, 2^231113251 is an apocalyptic number.

231113251 is a deficient number, since it is larger than the sum of its proper divisors (3065309).

231113251 is a wasteful number, since it uses less digits than its factorization.

231113251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425.

The product of its digits is 180, while the sum is 19.

The square root of 231113251 is about 15202.4093814106. The cubic root of 231113251 is about 613.6794995364.

Adding to 231113251 its reverse (152311132), we get a palindrome (383424383).

It can be divided in two parts, 23111 and 3251, that added together give a palindrome (26362).

The spelling of 231113251 in words is "two hundred thirty-one million, one hundred thirteen thousand, two hundred fifty-one".