20031003031131 has 32 divisors (see below), whose sum is σ = 31135013898240. Its totient is φ = 12711371536800.

The previous prime is 20031003031129. The next prime is 20031003031139. The reversal of 20031003031131 is 13113030013002.

It is a happy number.

20031003031131 is a `hidden beast` number, since 20 + 0 + 310 + 0 + 303 + 1 + 1 + 31 = 666.

It is not a de Polignac number, because 20031003031131 - 2¹ = 20031003031129 is a prime.

It is a super-2 number, since 2×20031003031131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20031003031139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196112085 + ... + 196214198.

It is an arithmetic number, because the mean of its divisors is an integer number (972969184320).

Almost surely, 2^{20031003031131} is an apocalyptic number.

20031003031131 is a deficient number, since it is larger than the sum of its proper divisors (11104010867109).

20031003031131 is a wasteful number, since it uses less digits than its factorization.

20031003031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392326384 (or 392326378 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20031003031131 its reverse (13113030013002), we get a palindrome (33144033044133).

The spelling of 20031003031131 in words is "twenty trillion, thirty-one billion, three million, thirty-one thousand, one hundred thirty-one".