231170387 has 12 divisors (see below), whose sum is σ = 269160840. Its totient is φ = 197963136.

The previous prime is 231170351. The next prime is 231170399. The reversal of 231170387 is 783071132.

It is not a de Polignac number, because 231170387 - 2¹⁴ = 231154003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231170347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97664 + ... + 100002.

It is an arithmetic number, because the mean of its divisors is an integer number (22430070).

Almost surely, 2^231170387 is an apocalyptic number.

231170387 is a deficient number, since it is larger than the sum of its proper divisors (37990453).

231170387 is a wasteful number, since it uses less digits than its factorization.

231170387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370 (or 4363 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 231170387 is about 15204.2884410945. The cubic root of 231170387 is about 613.7300668127.

The spelling of 231170387 in words is "two hundred thirty-one million, one hundred seventy thousand, three hundred eighty-seven".