1213100030231 has 4 divisors (see below), whose sum is σ = 1214085490464. Its totient is φ = 1212114570000.

The previous prime is 1213100030221. The next prime is 1213100030353. The reversal of 1213100030231 is 1320300013121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1213100030231 - 2²⁶ = 1213032921367 is a prime.

It is a super-2 number, since 2×1213100030231² (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 (1213100030221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492728270 + ... + 492730731.

It is an arithmetic number, because the mean of its divisors is an integer number (303521372616).

Almost surely, 2^{1213100030231} is an apocalyptic number.

1213100030231 is a deficient number, since it is larger than the sum of its proper divisors (985460233).

1213100030231 is an equidigital number, since it uses as much as digits as its factorization.

1213100030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985460232.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1213100030231 its reverse (1320300013121), we get a palindrome (2533400043352).

The spelling of 1213100030231 in words is "one trillion, two hundred thirteen billion, one hundred million, thirty thousand, two hundred thirty-one".