1213020001331 has 8 divisors (see below), whose sum is σ = 1259627856144. Its totient is φ = 1167222718080.

The previous prime is 1213020001327. The next prime is 1213020001367. The reversal of 1213020001331 is 1331000203121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213020001331 - 2² = 1213020001327 is a prime.

It is a super-2 number, since 2×1213020001331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213020801331) 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, 202639841 + ... + 202645826.

It is an arithmetic number, because the mean of its divisors is an integer number (157453482018).

Almost surely, 2^{1213020001331} is an apocalyptic number.

1213020001331 is a deficient number, since it is larger than the sum of its proper divisors (46607854813).

1213020001331 is an equidigital number, since it uses as much as digits as its factorization.

1213020001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405285781.

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

Adding to 1213020001331 its reverse (1331000203121), we get a palindrome (2544020204452).

The spelling of 1213020001331 in words is "one trillion, two hundred thirteen billion, twenty million, one thousand, three hundred thirty-one".