1213213032311 has 12 divisors (see below), whose sum is σ = 1430621354592. Its totient is φ = 1025651719008.

The previous prime is 1213213032221. The next prime is 1213213032337. The reversal of 1213213032311 is 1132303123121.

It is not a de Polignac number, because 1213213032311 - 2²² = 1213208838007 is a prime.

It is a super-3 number, since 3×1213213032311³ (a number of 37 digits) contains 333 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 (1213213032371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169581695 + ... + 169588848.

It is an arithmetic number, because the mean of its divisors is an integer number (119218446216).

Almost surely, 2^{1213213032311} is an apocalyptic number.

1213213032311 is a deficient number, since it is larger than the sum of its proper divisors (217408322281).

1213213032311 is an equidigital number, since it uses as much as digits as its factorization.

1213213032311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339170630 (or 339170623 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1213213032311 its reverse (1132303123121), we get a palindrome (2345516155432).

The spelling of 1213213032311 in words is "one trillion, two hundred thirteen billion, two hundred thirteen million, thirty-two thousand, three hundred eleven".