20031152523031 has 16 divisors (see below), whose sum is σ = 21792363475680. Its totient is φ = 18301863444480.

The previous prime is 20031152523029. The next prime is 20031152523049. The reversal of 20031152523031 is 13032525113002.

It is a cyclic number.

It is not a de Polignac number, because 20031152523031 - 2¹ = 20031152523029 is a prime.

It is a super-2 number, since 2×20031152523031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031152523001) 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, 8140330 + ... + 10311511.

It is an arithmetic number, because the mean of its divisors is an integer number (1362022717230).

Almost surely, 2^{20031152523031} is an apocalyptic number.

20031152523031 is a deficient number, since it is larger than the sum of its proper divisors (1761210952649).

20031152523031 is a wasteful number, since it uses less digits than its factorization.

20031152523031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18452706.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 20031152523031 its reverse (13032525113002), we get a palindrome (33063677636033).

The spelling of 20031152523031 in words is "twenty trillion, thirty-one billion, one hundred fifty-two million, five hundred twenty-three thousand, thirty-one".