450642831 has 4 divisors (see below), whose sum is σ = 600857112. Its totient is φ = 300428552.

The previous prime is 450642827. The next prime is 450642833. The reversal of 450642831 is 138246054.

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 450642831 - 2² = 450642827 is a prime.

It is a super-2 number, since 2×450642831² = 406157922263389122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 450642792 and 450642801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450642833) 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, 75107136 + ... + 75107141.

It is an arithmetic number, because the mean of its divisors is an integer number (150214278).

Almost surely, 2^450642831 is an apocalyptic number.

450642831 is a deficient number, since it is larger than the sum of its proper divisors (150214281).

450642831 is a wasteful number, since it uses less digits than its factorization.

450642831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150214280.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 450642831 is about 21228.3497003418. The cubic root of 450642831 is about 766.6741531930.

Adding to 450642831 its reverse (138246054), we get a palindrome (588888885).

It can be divided in two parts, 45064 and 2831, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 450642831 in words is "four hundred fifty million, six hundred forty-two thousand, eight hundred thirty-one".