231037117 has 2 divisors, whose sum is σ = 231037118. Its totient is φ = 231037116.

The previous prime is 231037087. The next prime is 231037127. The reversal of 231037117 is 711730132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226622916 + 4414201 = 15054^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 231037117 - 2¹⁵ = 231004349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231037091 and 231037100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231037127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115518558 + 115518559.

It is an arithmetic number, because the mean of its divisors is an integer number (115518559).

Almost surely, 2^231037117 is an apocalyptic number.

It is an amenable number.

231037117 is a deficient number, since it is larger than the sum of its proper divisors (1).

231037117 is an equidigital number, since it uses as much as digits as its factorization.

231037117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 231037117 is about 15199.9051641778. The cubic root of 231037117 is about 613.6121054397.

Adding to 231037117 its reverse (711730132), we get a palindrome (942767249).

The spelling of 231037117 in words is "two hundred thirty-one million, thirty-seven thousand, one hundred seventeen".