231460220551 has 8 divisors (see below), whose sum is σ = 266301309600. Its totient is φ = 197062967328.

The previous prime is 231460220543. The next prime is 231460220591. The reversal of 231460220551 is 155022064132.

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 231460220551 - 2³ = 231460220543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231460220501) 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, 110957836 + ... + 110959921.

It is an arithmetic number, because the mean of its divisors is an integer number (33287663700).

Almost surely, 2^231460220551 is an apocalyptic number.

231460220551 is a deficient number, since it is larger than the sum of its proper divisors (34841089049).

231460220551 is a wasteful number, since it uses less digits than its factorization.

231460220551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221917913.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 231460220551 its reverse (155022064132), we get a palindrome (386482284683).

The spelling of 231460220551 in words is "two hundred thirty-one billion, four hundred sixty million, two hundred twenty thousand, five hundred fifty-one".