243400231025 has 24 divisors (see below), whose sum is σ = 363087266880. Its totient is φ = 158118644160.

The previous prime is 243400231001. The next prime is 243400231037. The reversal of 243400231025 is 520132004342.

It is not a de Polignac number, because 243400231025 - 2⁶ = 243400230961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243400230985 and 243400231003.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36598214 + ... + 36604863.

It is an arithmetic number, because the mean of its divisors is an integer number (15128636120).

Almost surely, 2^243400231025 is an apocalyptic number.

243400231025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

243400231025 is a deficient number, since it is larger than the sum of its proper divisors (119687035855).

243400231025 is a wasteful number, since it uses less digits than its factorization.

243400231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73203113 (or 73203108 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 243400231025 its reverse (520132004342), we get a palindrome (763532235367).

The spelling of 243400231025 in words is "two hundred forty-three billion, four hundred million, two hundred thirty-one thousand, twenty-five".