1213013311 has 8 divisors (see below), whose sum is σ = 1231133904. Its totient is φ = 1195018560.

The previous prime is 1213013309. The next prime is 1213013327. The reversal of 1213013311 is 1133103121.

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 1213013311 - 2¹ = 1213013309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213013341) 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, 11950 + ... + 50683.

It is an arithmetic number, because the mean of its divisors is an integer number (153891738).

Almost surely, 2^1213013311 is an apocalyptic number.

1213013311 is a deficient number, since it is larger than the sum of its proper divisors (18120593).

1213013311 is a wasteful number, since it uses less digits than its factorization.

1213013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62921.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1213013311 is about 34828.3406294357. The cubic root of 1213013311 is about 1066.4860739945.

Adding to 1213013311 its reverse (1133103121), we get a palindrome (2346116432).

The spelling of 1213013311 in words is "one billion, two hundred thirteen million, thirteen thousand, three hundred eleven".