641131023 has 8 divisors (see below), whose sum is σ = 920598448. Its totient is φ = 394542144.

The previous prime is 641130947. The next prime is 641131039. The reversal of 641131023 is 320131146.

641131023 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 not a de Polignac number, because 641131023 - 2²⁶ = 574022159 is a prime.

It is a super-2 number, since 2×641131023² = 822097977306053058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641131223) 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, 8219590 + ... + 8219667.

It is an arithmetic number, because the mean of its divisors is an integer number (115074806).

Almost surely, 2^641131023 is an apocalyptic number.

641131023 is a deficient number, since it is larger than the sum of its proper divisors (279467425).

641131023 is a wasteful number, since it uses less digits than its factorization.

641131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16439273.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 641131023 is about 25320.5652188098. The cubic root of 641131023 is about 862.2812262601.

Adding to 641131023 its reverse (320131146), we get a palindrome (961262169).

The spelling of 641131023 in words is "six hundred forty-one million, one hundred thirty-one thousand, twenty-three".