641045031 has 32 divisors (see below), whose sum is σ = 943584768. Its totient is φ = 383898240.

The previous prime is 641045021. The next prime is 641045033. The reversal of 641045031 is 130540146.

It is not a de Polignac number, because 641045031 - 2⁹ = 641044519 is a prime.

It is a super-2 number, since 2×641045031² = 821877463539581922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641044992 and 641045010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641045033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1614525 + ... + 1614921.

It is an arithmetic number, because the mean of its divisors is an integer number (29487024).

Almost surely, 2^641045031 is an apocalyptic number.

641045031 is a deficient number, since it is larger than the sum of its proper divisors (302539737).

641045031 is a wasteful number, since it uses less digits than its factorization.

641045031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 641045031 is about 25318.8670955080. The cubic root of 641045031 is about 862.2426732447.

Adding to 641045031 its reverse (130540146), we get a palindrome (771585177).

The spelling of 641045031 in words is "six hundred forty-one million, forty-five thousand, thirty-one".