1231313030213 has 16 divisors (see below), whose sum is σ = 1437216459264. Its totient is φ = 1032911894400.

The previous prime is 1231313030161. The next prime is 1231313030249. The reversal of 1231313030213 is 3120303131321.

It is a cyclic number.

It is not a de Polignac number, because 1231313030213 - 2¹⁰ = 1231313029189 is a prime.

It is a super-2 number, since 2×1231313030213² (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 (1231313030273) 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, 9443681 + ... + 9573177.

It is an arithmetic number, because the mean of its divisors is an integer number (89826028704).

Almost surely, 2^{1231313030213} is an apocalyptic number.

It is an amenable number.

1231313030213 is a deficient number, since it is larger than the sum of its proper divisors (205903429051).

1231313030213 is a wasteful number, since it uses less digits than its factorization.

1231313030213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158452.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1231313030213 its reverse (3120303131321), we get a palindrome (4351616161534).

The spelling of 1231313030213 in words is "one trillion, two hundred thirty-one billion, three hundred thirteen million, thirty thousand, two hundred thirteen".