31100003121131 has 32 divisors (see below), whose sum is σ = 36588558988800. Its totient is φ = 25879299667200.

The previous prime is 31100003121101. The next prime is 31100003121163. The reversal of 31100003121131 is 13112130000113.

It is not a de Polignac number, because 31100003121131 - 2¹⁰ = 31100003120107 is a prime.

It is a super-2 number, since 2×31100003121131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31100003121101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382497920 + ... + 382579218.

It is an arithmetic number, because the mean of its divisors is an integer number (1143392468400).

Almost surely, 2^{31100003121131} is an apocalyptic number.

31100003121131 is a deficient number, since it is larger than the sum of its proper divisors (5488555867669).

31100003121131 is a wasteful number, since it uses less digits than its factorization.

31100003121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87875.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31100003121131 its reverse (13112130000113), we get a palindrome (44212133121244).

The spelling of 31100003121131 in words is "thirty-one trillion, one hundred billion, three million, one hundred twenty-one thousand, one hundred thirty-one".