2131011121031 has 16 divisors (see below), whose sum is σ = 2358806706144. Its totient is φ = 1912423353984.

The previous prime is 2131011120991. The next prime is 2131011121033. The reversal of 2131011121031 is 1301211101312.

It is not a de Polignac number, because 2131011121031 - 2²⁶ = 2130944012167 is a prime.

It is a super-2 number, since 2×2131011121031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131011121033) 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, 1120445 + ... + 2348918.

It is an arithmetic number, because the mean of its divisors is an integer number (147425419134).

Almost surely, 2^{2131011121031} is an apocalyptic number.

2131011121031 is a deficient number, since it is larger than the sum of its proper divisors (227795585113).

2131011121031 is a wasteful number, since it uses less digits than its factorization.

2131011121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470690.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 2131011121031 its reverse (1301211101312), we get a palindrome (3432222222343).

The spelling of 2131011121031 in words is "two trillion, one hundred thirty-one billion, eleven million, one hundred twenty-one thousand, thirty-one".