650431 has 4 divisors (see below), whose sum is σ = 659664. Its totient is φ = 641200.

The previous prime is 650413. The next prime is 650449. The reversal of 650431 is 134056.

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

It is an interprime number because it is at equal distance from previous prime (650413) and next prime (650449).

It is a cyclic number.

It is not a de Polignac number, because 650431 - 2¹¹ = 648383 is a prime.

It is a super-2 number, since 2×650431² = 846120971522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 650399 and 650408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650401) 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, 4510 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (164916).

2⁶⁵⁰⁴³¹ is an apocalyptic number.

650431 is a deficient number, since it is larger than the sum of its proper divisors (9233).

650431 is an equidigital number, since it uses as much as digits as its factorization.

650431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9232.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 650431 is about 806.4930253883. The cubic root of 650431 is about 86.6430524092.

Adding to 650431 its reverse (134056), we get a palindrome (784487).

It can be divided in two parts, 650 and 431, that added together give a triangular number (1081 = T₄₆).

The spelling of 650431 in words is "six hundred fifty thousand, four hundred thirty-one".