1211311114031 has 16 divisors (see below), whose sum is σ = 1290330355104. Its totient is φ = 1133158324224.

The previous prime is 1211311114009. The next prime is 1211311114061. The reversal of 1211311114031 is 1304111131121.

It is a cyclic number.

It is not a de Polignac number, because 1211311114031 - 2¹⁸ = 1211310851887 is a prime.

It is a super-2 number, since 2×1211311114031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211311113994 and 1211311114012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211311114061) 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, 11100920 + ... + 11209506.

It is an arithmetic number, because the mean of its divisors is an integer number (80645647194).

Almost surely, 2^{1211311114031} is an apocalyptic number.

1211311114031 is a deficient number, since it is larger than the sum of its proper divisors (79019241073).

1211311114031 is a wasteful number, since it uses less digits than its factorization.

1211311114031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112570.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 1211311114031 its reverse (1304111131121), we get a palindrome (2515422245152).

The spelling of 1211311114031 in words is "one trillion, two hundred eleven billion, three hundred eleven million, one hundred fourteen thousand, thirty-one".