240312331123123 has 12 divisors (see below), whose sum is σ = 279568110410712. Its totient is φ = 205966441171680.

The previous prime is 240312331123091. The next prime is 240312331123129. The reversal of 240312331123123 is 321321133213042.

It is not a de Polignac number, because 240312331123123 - 2⁵ = 240312331123091 is a prime.

It is a super-2 number, since 2×240312331123123² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240312331123129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184546165 + ... + 185843782.

It is an arithmetic number, because the mean of its divisors is an integer number (23297342534226).

Almost surely, 2^{240312331123123} is an apocalyptic number.

240312331123123 is a deficient number, since it is larger than the sum of its proper divisors (39255779287589).

240312331123123 is a wasteful number, since it uses less digits than its factorization.

240312331123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370403202 (or 370403195 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 240312331123123 its reverse (321321133213042), we get a palindrome (561633464336165).

The spelling of 240312331123123 in words is "two hundred forty trillion, three hundred twelve billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred twenty-three".