20231251345 has 16 divisors (see below), whose sum is σ = 24430412160. Its totient is φ = 16083360000.

The previous prime is 20231251343. The next prime is 20231251351. The reversal of 20231251345 is 54315213202.

It is not a de Polignac number, because 20231251345 - 2¹ = 20231251343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20231251343) 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, 532585 + ... + 569305.

It is an arithmetic number, because the mean of its divisors is an integer number (1526900760).

Almost surely, 2^20231251345 is an apocalyptic number.

It is an amenable number.

20231251345 is a deficient number, since it is larger than the sum of its proper divisors (4199160815).

20231251345 is a wasteful number, since it uses less digits than its factorization.

20231251345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37416.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20231251345 its reverse (54315213202), we get a palindrome (74546464547).

The spelling of 20231251345 in words is "twenty billion, two hundred thirty-one million, two hundred fifty-one thousand, three hundred forty-five".