111231401361 has 16 divisors (see below), whose sum is σ = 148521054720. Its totient is φ = 74048083200.

The previous prime is 111231401357. The next prime is 111231401399. The reversal of 111231401361 is 163104132111.

It is not a de Polignac number, because 111231401361 - 2² = 111231401357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111231401341) 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, 7121961 + ... + 7137561.

It is an arithmetic number, because the mean of its divisors is an integer number (9282565920).

Almost surely, 2^111231401361 is an apocalyptic number.

It is an amenable number.

111231401361 is a deficient number, since it is larger than the sum of its proper divisors (37289653359).

111231401361 is a wasteful number, since it uses less digits than its factorization.

111231401361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18856.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 111231401361 its reverse (163104132111), we get a palindrome (274335533472).

The spelling of 111231401361 in words is "one hundred eleven billion, two hundred thirty-one million, four hundred one thousand, three hundred sixty-one".