1213113310231 has 8 divisors (see below), whose sum is σ = 1230256750464. Its totient is φ = 1195971462840.

The previous prime is 1213113310219. The next prime is 1213113310301. The reversal of 1213113310231 is 1320133113121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213113310231 is a prime.

It is a super-2 number, since 2×1213113310231² (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 (1213113410231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179616 + ... + 1953898.

It is an arithmetic number, because the mean of its divisors is an integer number (153782093808).

Almost surely, 2^{1213113310231} is an apocalyptic number.

1213113310231 is a deficient number, since it is larger than the sum of its proper divisors (17143440233).

1213113310231 is an equidigital number, since it uses as much as digits as its factorization.

1213113310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796421.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1213113310231 its reverse (1320133113121), we get a palindrome (2533246423352).

The spelling of 1213113310231 in words is "one trillion, two hundred thirteen billion, one hundred thirteen million, three hundred ten thousand, two hundred thirty-one".