20231400571257 has 16 divisors (see below), whose sum is σ = 27081049067712. Its totient is φ = 13434679664640.

The previous prime is 20231400571247. The next prime is 20231400571259. The reversal of 20231400571257 is 75217500413202.

It is not a de Polignac number, because 20231400571257 - 2¹⁶ = 20231400505721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20231400571259) 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, 24043278 + ... + 24870504.

It is an arithmetic number, because the mean of its divisors is an integer number (1692565566732).

Almost surely, 2^{20231400571257} is an apocalyptic number.

It is an amenable number.

20231400571257 is a deficient number, since it is larger than the sum of its proper divisors (6849648496455).

20231400571257 is a wasteful number, since it uses less digits than its factorization.

20231400571257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859208.

The product of its (nonzero) digits is 117600, while the sum is 39.

Adding to 20231400571257 its reverse (75217500413202), we get a palindrome (95448900984459).

The spelling of 20231400571257 in words is "twenty trillion, two hundred thirty-one billion, four hundred million, five hundred seventy-one thousand, two hundred fifty-seven".