1231313030211 has 16 divisors (see below), whose sum is σ = 1791563954688. Its totient is φ = 746015661600.

The previous prime is 1231313030161. The next prime is 1231313030249. The reversal of 1231313030211 is 1120303131321.

It is a happy number.

It is not a de Polignac number, because 1231313030211 - 2⁹ = 1231313029699 is a prime.

It is a super-2 number, since 2×1231313030211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231313030251) 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, 5759931 + ... + 5969876.

It is an arithmetic number, because the mean of its divisors is an integer number (111972747168).

Almost surely, 2^{1231313030211} is an apocalyptic number.

1231313030211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1231313030211 is a deficient number, since it is larger than the sum of its proper divisors (560250924477).

1231313030211 is a wasteful number, since it uses less digits than its factorization.

1231313030211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11733002.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1231313030211 its reverse (1120303131321), we get a palindrome (2351616161532).

The spelling of 1231313030211 in words is "one trillion, two hundred thirty-one billion, three hundred thirteen million, thirty thousand, two hundred eleven".