231257182780340 has 12 divisors (see below), whose sum is σ = 485640083838756. Its totient is φ = 92502873112128.

The previous prime is 231257182780339. The next prime is 231257182780391. The reversal of 231257182780340 is 43087281752132.

It can be written as a sum of positive squares in 2 ways, for example, as 133381341239056 + 97875841541284 = 11549084^2 + 9893222^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5781429569489 + ... + 5781429569528.

It is an arithmetic number, because the mean of its divisors is an integer number (40470006986563).

Almost surely, 2^{231257182780340} is an apocalyptic number.

231257182780340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231257182780340 is an abundant number, since it is smaller than the sum of its proper divisors (254382901058416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231257182780340 is a wasteful number, since it uses less digits than its factorization.

231257182780340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11562859139026 (or 11562859139024 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 231257182780340 in words is "two hundred thirty-one trillion, two hundred fifty-seven billion, one hundred eighty-two million, seven hundred eighty thousand, three hundred forty".