20311107604 has 6 divisors (see below), whose sum is σ = 35544438314. Its totient is φ = 10155553800.

The previous prime is 20311107601. The next prime is 20311107631. The reversal of 20311107604 is 40670111302.

It can be written as a sum of positive squares in only one way, i.e., 12600511504 + 7710596100 = 112252^2 + 87810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311107601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2538888447 + ... + 2538888454.

Almost surely, 2^20311107604 is an apocalyptic number.

It is an amenable number.

20311107604 is a deficient number, since it is larger than the sum of its proper divisors (15233330710).

20311107604 is a wasteful number, since it uses less digits than its factorization.

20311107604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077776905 (or 5077776903 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 20311107604 its reverse (40670111302), we get a palindrome (60981218906).

The spelling of 20311107604 in words is "twenty billion, three hundred eleven million, one hundred seven thousand, six hundred four".