2231111202131 has 64 divisors (see below), whose sum is σ = 2758429900800. Its totient is φ = 1763573212800.

The previous prime is 2231111202101. The next prime is 2231111202143. The reversal of 2231111202131 is 1312021111322.

2231111202131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2231111202131 - 2¹⁸ = 2231110939987 is a prime.

It is a super-3 number, since 3×2231111202131³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2231111202101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 820561790 + ... + 820564508.

It is an arithmetic number, because the mean of its divisors is an integer number (43100467200).

Almost surely, 2^{2231111202131} is an apocalyptic number.

2231111202131 is a deficient number, since it is larger than the sum of its proper divisors (527318698669).

2231111202131 is a wasteful number, since it uses less digits than its factorization.

2231111202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2231111202131 its reverse (1312021111322), we get a palindrome (3543132313453).

The spelling of 2231111202131 in words is "two trillion, two hundred thirty-one billion, one hundred eleven million, two hundred two thousand, one hundred thirty-one".