231061151 has 4 divisors (see below), whose sum is σ = 241107312. Its totient is φ = 221014992.

The previous prime is 231061141. The next prime is 231061211. The reversal of 231061151 is 151160132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231061151 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 (231061141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5023046 + ... + 5023091.

It is an arithmetic number, because the mean of its divisors is an integer number (60276828).

Almost surely, 2^231061151 is an apocalyptic number.

231061151 is a deficient number, since it is larger than the sum of its proper divisors (10046161).

231061151 is a wasteful number, since it uses less digits than its factorization.

231061151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10046160.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 231061151 is about 15200.6957406561. The cubic root of 231061151 is about 613.6333820238.

The spelling of 231061151 in words is "two hundred thirty-one million, sixty-one thousand, one hundred fifty-one".