20312440501 has 8 divisors (see below), whose sum is σ = 21205532160. Its totient is φ = 19420177392.

The previous prime is 20312440487. The next prime is 20312440513. The reversal of 20312440501 is 10504421302.

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 20312440501 - 2⁵ = 20312440469 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 (20312440201) 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, 156766 + ... + 255343.

It is an arithmetic number, because the mean of its divisors is an integer number (2650691520).

Almost surely, 2^20312440501 is an apocalyptic number.

It is an amenable number.

20312440501 is a deficient number, since it is larger than the sum of its proper divisors (893091659).

20312440501 is a wasteful number, since it uses less digits than its factorization.

20312440501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414275.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20312440501 its reverse (10504421302), we get a palindrome (30816861803).

The spelling of 20312440501 in words is "twenty billion, three hundred twelve million, four hundred forty thousand, five hundred one".