11111312030 has 96 divisors (see below), whose sum is σ = 26529503616. Its totient is φ = 3309659136.

The previous prime is 11111312027. The next prime is 11111312033. The reversal of 11111312030 is 3021311111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11111312027) and next prime (11111312033).

It is a super-2 number, since 2×11111312030² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 11111311996 and 11111312014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111312033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56987 + ... + 159593.

It is an arithmetic number, because the mean of its divisors is an integer number (276348996).

Almost surely, 2^11111312030 is an apocalyptic number.

11111312030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111312030 is an abundant number, since it is smaller than the sum of its proper divisors (15418191586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111312030 is a wasteful number, since it uses less digits than its factorization.

11111312030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102658 (or 102651 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11111312030 its reverse (3021311111), we get a palindrome (14132623141).

The spelling of 11111312030 in words is "eleven billion, one hundred eleven million, three hundred twelve thousand, thirty".