20311428037 has 2 divisors, whose sum is σ = 20311428038. Its totient is φ = 20311428036.

The previous prime is 20311428029. The next prime is 20311428043. The reversal of 20311428037 is 73082411302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19512178596 + 799249441 = 139686^2 + 28271^2 .

It is a cyclic number.

It is not a de Polignac number, because 20311428037 - 2³ = 20311428029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20311428017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155714018 + 10155714019.

It is an arithmetic number, because the mean of its divisors is an integer number (10155714019).

Almost surely, 2^20311428037 is an apocalyptic number.

It is an amenable number.

20311428037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311428037 is an equidigital number, since it uses as much as digits as its factorization.

20311428037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 20311428037 its reverse (73082411302), we get a palindrome (93393839339).

The spelling of 20311428037 in words is "twenty billion, three hundred eleven million, four hundred twenty-eight thousand, thirty-seven".