650920431 has 16 divisors (see below), whose sum is σ = 992493824. Its totient is φ = 371723904.

The previous prime is 650920427. The next prime is 650920453. The reversal of 650920431 is 134029056.

It is not a de Polignac number, because 650920431 - 2² = 650920427 is a prime.

It is a super-2 number, since 2×650920431² = 847394814986451522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650920471) 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, 28596 + ... + 46038.

It is an arithmetic number, because the mean of its divisors is an integer number (62030864).

Almost surely, 2^650920431 is an apocalyptic number.

650920431 is a deficient number, since it is larger than the sum of its proper divisors (341573393).

650920431 is a wasteful number, since it uses less digits than its factorization.

650920431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19230.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 650920431 is about 25513.1423192048. The cubic root of 650920431 is about 866.6477911241.

Adding to 650920431 its reverse (134029056), we get a palindrome (784949487).

The spelling of 650920431 in words is "six hundred fifty million, nine hundred twenty thousand, four hundred thirty-one".