11612320311 has 16 divisors (see below), whose sum is σ = 15611494400. Its totient is φ = 7677397728.

The previous prime is 11612320303. The next prime is 11612320319. The reversal of 11612320311 is 11302321611.

It is an interprime number because it is at equal distance from previous prime (11612320303) and next prime (11612320319).

It is not a de Polignac number, because 11612320311 - 2³ = 11612320303 is a prime.

It is a super-3 number, since 3×11612320311³ (a number of 31 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 (11612320319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225530 + ... + 1234968.

It is an arithmetic number, because the mean of its divisors is an integer number (975718400).

Almost surely, 2^11612320311 is an apocalyptic number.

11612320311 is a deficient number, since it is larger than the sum of its proper divisors (3999174089).

11612320311 is a wasteful number, since it uses less digits than its factorization.

11612320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12798.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 11612320311 its reverse (11302321611), we get a palindrome (22914641922).

The spelling of 11612320311 in words is "eleven billion, six hundred twelve million, three hundred twenty thousand, three hundred eleven".