20131024331 has 4 divisors (see below), whose sum is σ = 21961117464. Its totient is φ = 18300931200.

The previous prime is 20131024289. The next prime is 20131024379. The reversal of 20131024331 is 13342013102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20131024331 - 2¹⁸ = 20130762187 is a prime.

It is a super-2 number, since 2×20131024331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20131027331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915046550 + ... + 915046571.

It is an arithmetic number, because the mean of its divisors is an integer number (5490279366).

Almost surely, 2^20131024331 is an apocalyptic number.

20131024331 is a deficient number, since it is larger than the sum of its proper divisors (1830093133).

20131024331 is a wasteful number, since it uses less digits than its factorization.

20131024331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830093132.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20131024331 its reverse (13342013102), we get a palindrome (33473037433).

The spelling of 20131024331 in words is "twenty billion, one hundred thirty-one million, twenty-four thousand, three hundred thirty-one".