120231403 has 4 divisors (see below), whose sum is σ = 121471000. Its totient is φ = 118991808.

The previous prime is 120231359. The next prime is 120231409. The reversal of 120231403 is 304132021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304132021 = 2503 ⋅121507.

It is a cyclic number.

It is not a de Polignac number, because 120231403 - 2²⁵ = 86676971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120231409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619653 + ... + 619846.

It is an arithmetic number, because the mean of its divisors is an integer number (30367750).

Almost surely, 2^120231403 is an apocalyptic number.

120231403 is a deficient number, since it is larger than the sum of its proper divisors (1239597).

120231403 is an equidigital number, since it uses as much as digits as its factorization.

120231403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239596.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120231403 is about 10965.0081167321. The cubic root of 120231403 is about 493.5592606629.

Adding to 120231403 its reverse (304132021), we get a palindrome (424363424).

The spelling of 120231403 in words is "one hundred twenty million, two hundred thirty-one thousand, four hundred three".