20031202032531 has 16 divisors (see below), whose sum is σ = 27571048227840. Its totient is φ = 12922783443360.

The previous prime is 20031202032451. The next prime is 20031202032571. The reversal of 20031202032531 is 13523020213002.

It is a happy number.

It is not a de Polignac number, because 20031202032531 - 2⁴² = 15633155521427 is a prime.

It is a super-2 number, since 2×20031202032531² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20031202032571) 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, 2657680 + ... + 6864813.

It is an arithmetic number, because the mean of its divisors is an integer number (1723190514240).

Almost surely, 2^{20031202032531} is an apocalyptic number.

20031202032531 is a deficient number, since it is larger than the sum of its proper divisors (7539846195309).

20031202032531 is a wasteful number, since it uses less digits than its factorization.

20031202032531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9545146.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 20031202032531 its reverse (13523020213002), we get a palindrome (33554222245533).

The spelling of 20031202032531 in words is "twenty trillion, thirty-one billion, two hundred two million, thirty-two thousand, five hundred thirty-one".