231441551 has 8 divisors (see below), whose sum is σ = 254178000. Its totient is φ = 208987840.

The previous prime is 231441521. The next prime is 231441557. The reversal of 231441551 is 155144132.

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 231441551 - 2⁶ = 231441487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231441551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231441557) 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, 68966 + ... + 72243.

It is an arithmetic number, because the mean of its divisors is an integer number (31772250).

Almost surely, 2^231441551 is an apocalyptic number.

231441551 is a deficient number, since it is larger than the sum of its proper divisors (22736449).

231441551 is a wasteful number, since it uses less digits than its factorization.

231441551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141369.

The product of its digits is 2400, while the sum is 26.

The square root of 231441551 is about 15213.2031801327. The cubic root of 231441551 is about 613.9699425068.

Adding to 231441551 its reverse (155144132), we get a palindrome (386585683).

The spelling of 231441551 in words is "two hundred thirty-one million, four hundred forty-one thousand, five hundred fifty-one".