243250431351 has 32 divisors (see below), whose sum is σ = 349109515008. Its totient is φ = 150103134720.

The previous prime is 243250431349. The next prime is 243250431373. The reversal of 243250431351 is 153134052342.

It is not a de Polignac number, because 243250431351 - 2¹ = 243250431349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243250431331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2036556 + ... + 2152686.

It is an arithmetic number, because the mean of its divisors is an integer number (10909672344).

Almost surely, 2^243250431351 is an apocalyptic number.

243250431351 is a deficient number, since it is larger than the sum of its proper divisors (105859083657).

243250431351 is a wasteful number, since it uses less digits than its factorization.

243250431351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116831.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 243250431351 its reverse (153134052342), we get a palindrome (396384483693).

The spelling of 243250431351 in words is "two hundred forty-three billion, two hundred fifty million, four hundred thirty-one thousand, three hundred fifty-one".