231380757 has 12 divisors (see below), whose sum is σ = 334399884. Its totient is φ = 154169280.

The previous prime is 231380749. The next prime is 231380771. The reversal of 231380757 is 757083132.

It can be written as a sum of positive squares in 2 ways, for example, as 36108081 + 195272676 = 6009^2 + 13974^2 .

It is not a de Polignac number, because 231380757 - 2³ = 231380749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231380797) 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, 13407 + ... + 25347.

It is an arithmetic number, because the mean of its divisors is an integer number (27866657).

Almost surely, 2^231380757 is an apocalyptic number.

It is an amenable number.

231380757 is a deficient number, since it is larger than the sum of its proper divisors (103019127).

231380757 is a wasteful number, since it uses less digits than its factorization.

231380757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14100 (or 14097 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 231380757 is about 15211.2049818547. The cubic root of 231380757 is about 613.9161795341.

The spelling of 231380757 in words is "two hundred thirty-one million, three hundred eighty thousand, seven hundred fifty-seven".