1210131100031 has 4 divisors (see below), whose sum is σ = 1383006971472. Its totient is φ = 1037255228592.

The previous prime is 1210131099979. The next prime is 1210131100033. The reversal of 1210131100031 is 1300011310121.

It is a happy number.

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 1210131100031 - 2¹⁸ = 1210130837887 is a prime.

It is a super-2 number, since 2×1210131100031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210131099979 and 1210131100015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210131100033) 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 3 ways as a sum of consecutive naturals, for example, 86437935710 + ... + 86437935723.

It is an arithmetic number, because the mean of its divisors is an integer number (345751742868).

Almost surely, 2^{1210131100031} is an apocalyptic number.

1210131100031 is a deficient number, since it is larger than the sum of its proper divisors (172875871441).

1210131100031 is an equidigital number, since it uses as much as digits as its factorization.

1210131100031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172875871440.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1210131100031 its reverse (1300011310121), we get a palindrome (2510142410152).

The spelling of 1210131100031 in words is "one trillion, two hundred ten billion, one hundred thirty-one million, one hundred thousand, thirty-one".