120340431123 has 16 divisors (see below), whose sum is σ = 175497670656. Its totient is φ = 72743159840.

The previous prime is 120340431103. The next prime is 120340431137. The reversal of 120340431123 is 321134043021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120340431123 - 2⁵ = 120340431091 is a prime.

It is a super-2 number, since 2×120340431123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120340431093 and 120340431102.

It is not an unprimeable number, because it can be changed into a prime (120340431103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4748040 + ... + 4773317.

It is an arithmetic number, because the mean of its divisors is an integer number (10968604416).

Almost surely, 2^120340431123 is an apocalyptic number.

120340431123 is a deficient number, since it is larger than the sum of its proper divisors (55157239533).

120340431123 is a wasteful number, since it uses less digits than its factorization.

120340431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521754.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 120340431123 its reverse (321134043021), we get a palindrome (441474474144).

The spelling of 120340431123 in words is "one hundred twenty billion, three hundred forty million, four hundred thirty-one thousand, one hundred twenty-three".