111201230131 has 16 divisors (see below), whose sum is σ = 113662217088. Its totient is φ = 108768211200.

The previous prime is 111201230123. The next prime is 111201230141. The reversal of 111201230131 is 131032102111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111201230131 - 2³ = 111201230123 is a prime.

It is a super-2 number, since 2×111201230131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201230141) 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, 21054211 + ... + 21059491.

It is an arithmetic number, because the mean of its divisors is an integer number (7103888568).

Almost surely, 2^111201230131 is an apocalyptic number.

111201230131 is a deficient number, since it is larger than the sum of its proper divisors (2460986957).

111201230131 is a wasteful number, since it uses less digits than its factorization.

111201230131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111201230131 its reverse (131032102111), we get a palindrome (242233332242).

The spelling of 111201230131 in words is "one hundred eleven billion, two hundred one million, two hundred thirty thousand, one hundred thirty-one".