931430641 has 4 divisors (see below), whose sum is σ = 932106484. Its totient is φ = 930754800.

The previous prime is 931430551. The next prime is 931430651. The reversal of 931430641 is 146034139.

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

It can be written as a sum of positive squares in 2 ways, for example, as 573123600 + 358307041 = 23940^2 + 18929^2 .

It is a cyclic number.

It is not a de Polignac number, because 931430641 - 2¹¹ = 931428593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (931430651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335850 + ... + 338611.

It is an arithmetic number, because the mean of its divisors is an integer number (233026621).

Almost surely, 2^931430641 is an apocalyptic number.

It is an amenable number.

931430641 is a deficient number, since it is larger than the sum of its proper divisors (675843).

931430641 is a wasteful number, since it uses less digits than its factorization.

931430641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675842.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 931430641 is about 30519.3486332851. The cubic root of 931430641 is about 976.6002704782.

The spelling of 931430641 in words is "nine hundred thirty-one million, four hundred thirty thousand, six hundred forty-one".