1201311213 has 8 divisors (see below), whose sum is σ = 1628896800. Its totient is φ = 787299888.

The previous prime is 1201311187. The next prime is 1201311217. The reversal of 1201311213 is 3121131021.

It is a happy number.

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

It is not a de Polignac number, because 1201311213 - 2¹² = 1201307117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201311192 and 1201311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201311217) 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, 3393358 + ... + 3393711.

It is an arithmetic number, because the mean of its divisors is an integer number (203612100).

Almost surely, 2^1201311213 is an apocalyptic number.

It is an amenable number.

1201311213 is a deficient number, since it is larger than the sum of its proper divisors (427585587).

1201311213 is an equidigital number, since it uses as much as digits as its factorization.

1201311213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787131.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1201311213 is about 34659.9367137333. The cubic root of 1201311213 is about 1063.0454759983.

Adding to 1201311213 its reverse (3121131021), we get a palindrome (4322442234).

The spelling of 1201311213 in words is "one billion, two hundred one million, three hundred eleven thousand, two hundred thirteen".