231237756226340 has 12 divisors (see below), whose sum is σ = 485599288075356. Its totient is φ = 92495102490528.

The previous prime is 231237756226331. The next prime is 231237756226423. The reversal of 231237756226340 is 43622657732132.

It can be written as a sum of positive squares in 2 ways, for example, as 118318526914624 + 112919229311716 = 10877432^2 + 10626346^2 .

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, 5780943905639 + ... + 5780943905678.

It is an arithmetic number, because the mean of its divisors is an integer number (40466607339613).

Almost surely, 2^{231237756226340} is an apocalyptic number.

231237756226340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231237756226340 is an abundant number, since it is smaller than the sum of its proper divisors (254361531849016).

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

231237756226340 is a wasteful number, since it uses less digits than its factorization.

231237756226340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11561887811326 (or 11561887811324 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 53.

The spelling of 231237756226340 in words is "two hundred thirty-one trillion, two hundred thirty-seven billion, seven hundred fifty-six million, two hundred twenty-six thousand, three hundred forty".