691313230 has 16 divisors (see below), whose sum is σ = 1244670624. Its totient is φ = 276457120.

The previous prime is 691313221. The next prime is 691313239. The reversal of 691313230 is 32313196.

It is an interprime number because it is at equal distance from previous prime (691313221) and next prime (691313239).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691313239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61335 + ... + 71725.

It is an arithmetic number, because the mean of its divisors is an integer number (77791914).

Almost surely, 2^691313230 is an apocalyptic number.

691313230 is a deficient number, since it is larger than the sum of its proper divisors (553357394).

691313230 is a wasteful number, since it uses less digits than its factorization.

691313230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17051.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 691313230 is about 26292.8360965492. The cubic root of 691313230 is about 884.2158374642.

It can be divided in two parts, 69131 and 3230, that added together give a square (72361 = 269²).

The spelling of 691313230 in words is "six hundred ninety-one million, three hundred thirteen thousand, two hundred thirty".