650131961 has 8 divisors (see below), whose sum is σ = 689521344. Its totient is φ = 611669520.

The previous prime is 650131943. The next prime is 650131967. The reversal of 650131961 is 169131056.

It is a happy number.

650131961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 650131961 - 2⁶ = 650131897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650131967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230291 + ... + 233096.

It is an arithmetic number, because the mean of its divisors is an integer number (86190168).

Almost surely, 2^650131961 is an apocalyptic number.

650131961 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

650131961 is a deficient number, since it is larger than the sum of its proper divisors (39389383).

650131961 is a wasteful number, since it uses less digits than its factorization.

650131961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463471.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 650131961 is about 25497.6854047578. The cubic root of 650131961 is about 866.2977217736.

The spelling of 650131961 in words is "six hundred fifty million, one hundred thirty-one thousand, nine hundred sixty-one".