231015151 has 4 divisors (see below), whose sum is σ = 241059312. Its totient is φ = 220970992.

The previous prime is 231015121. The next prime is 231015157. The reversal of 231015151 is 151510132.

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

It is a cyclic number.

It is not a de Polignac number, because 231015151 - 2⁵ = 231015119 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 (231015157) 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, 5022046 + ... + 5022091.

It is an arithmetic number, because the mean of its divisors is an integer number (60264828).

Almost surely, 2^231015151 is an apocalyptic number.

231015151 is a deficient number, since it is larger than the sum of its proper divisors (10044161).

231015151 is a wasteful number, since it uses less digits than its factorization.

231015151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044160.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 231015151 is about 15199.1825767046. The cubic root of 231015151 is about 613.5926583037.

Adding to 231015151 its reverse (151510132), we get a palindrome (382525283).

The spelling of 231015151 in words is "two hundred thirty-one million, fifteen thousand, one hundred fifty-one".