124320431 has 4 divisors (see below), whose sum is σ = 124677000. Its totient is φ = 123963864.

The previous prime is 124320397. The next prime is 124320433. The reversal of 124320431 is 134023421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 124320431 - 2⁶ = 124320367 is a prime.

It is a super-2 number, since 2×124320431² = 30911139128051522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124320433) 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, 177761 + ... + 178458.

It is an arithmetic number, because the mean of its divisors is an integer number (31169250).

Almost surely, 2^124320431 is an apocalyptic number.

124320431 is a deficient number, since it is larger than the sum of its proper divisors (356569).

124320431 is an equidigital number, since it uses as much as digits as its factorization.

124320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356568.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 124320431 is about 11149.9072193449. The cubic root of 124320431 is about 499.0922610172.

Adding to 124320431 its reverse (134023421), we get a palindrome (258343852).

The spelling of 124320431 in words is "one hundred twenty-four million, three hundred twenty thousand, four hundred thirty-one".