20311441297 has 16 divisors (see below), whose sum is σ = 23285428992. Its totient is φ = 17355625920.

The previous prime is 20311441291. The next prime is 20311441307. The reversal of 20311441297 is 79214411302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20311441297 is a prime.

It is a super-2 number, since 2×20311441297² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20311441291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3733063 + ... + 3738499.

It is an arithmetic number, because the mean of its divisors is an integer number (1455339312).

Almost surely, 2^20311441297 is an apocalyptic number.

It is an amenable number.

20311441297 is a deficient number, since it is larger than the sum of its proper divisors (2973987695).

20311441297 is a wasteful number, since it uses less digits than its factorization.

20311441297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008.

The product of its (nonzero) digits is 12096, while the sum is 34.

Adding to 20311441297 its reverse (79214411302), we get a palindrome (99525852599).

The spelling of 20311441297 in words is "twenty billion, three hundred eleven million, four hundred forty-one thousand, two hundred ninety-seven".