11231321402 has 24 divisors (see below), whose sum is σ = 19446459168. Its totient is φ = 4765705200.

The previous prime is 11231321357. The next prime is 11231321459. The reversal of 11231321402 is 20412313211.

It is a super-2 number, since 2×11231321402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103493 + ... + 182135.

It is an arithmetic number, because the mean of its divisors is an integer number (810269132).

Almost surely, 2^11231321402 is an apocalyptic number.

11231321402 is a deficient number, since it is larger than the sum of its proper divisors (8215137766).

11231321402 is an equidigital number, since it uses as much as digits as its factorization.

11231321402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78854 (or 78753 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11231321402 its reverse (20412313211), we get a palindrome (31643634613).

The spelling of 11231321402 in words is "eleven billion, two hundred thirty-one million, three hundred twenty-one thousand, four hundred two".