631033043101 has 4 divisors (see below), whose sum is σ = 631036499452. Its totient is φ = 631029586752.

The previous prime is 631033043089. The next prime is 631033043111. The reversal of 631033043101 is 101340330136.

It is a happy number.

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 425619236025 + 205413807076 = 652395^2 + 453226^2 .

It is a cyclic number.

It is not a de Polignac number, because 631033043101 - 2⁷ = 631033042973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631033043111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438086 + ... + 1824871.

It is an arithmetic number, because the mean of its divisors is an integer number (157759124863).

Almost surely, 2^631033043101 is an apocalyptic number.

It is an amenable number.

631033043101 is a deficient number, since it is larger than the sum of its proper divisors (3456351).

631033043101 is a wasteful number, since it uses less digits than its factorization.

631033043101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456350.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 631033043101 its reverse (101340330136), we get a palindrome (732373373237).

The spelling of 631033043101 in words is "six hundred thirty-one billion, thirty-three million, forty-three thousand, one hundred one".