243902031145 has 16 divisors (see below), whose sum is σ = 296508066048. Its totient is φ = 192584666880.

The previous prime is 243902031103. The next prime is 243902031181. The reversal of 243902031145 is 541130209342.

It is not a de Polignac number, because 243902031145 - 2⁷ = 243902031017 is a prime.

It is a super-2 number, since 2×243902031145² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243902031145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696144 + ... + 986113.

It is an arithmetic number, because the mean of its divisors is an integer number (18531754128).

Almost surely, 2^243902031145 is an apocalyptic number.

It is an amenable number.

243902031145 is a deficient number, since it is larger than the sum of its proper divisors (52606034903).

243902031145 is a wasteful number, since it uses less digits than its factorization.

243902031145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682640.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 243902031145 in words is "two hundred forty-three billion, nine hundred two million, thirty-one thousand, one hundred forty-five".