111525160631 has 4 divisors (see below), whose sum is σ = 111530920200. Its totient is φ = 111519401064.

The previous prime is 111525160627. The next prime is 111525160661. The reversal of 111525160631 is 136061525111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136061525111 = 53 ⋅2567198587.

It is a cyclic number.

It is not a de Polignac number, because 111525160631 - 2² = 111525160627 is a prime.

It is a super-2 number, since 2×111525160631² (a number of 23 digits) contains 22 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 (111525160661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850641 + ... + 2889498.

It is an arithmetic number, because the mean of its divisors is an integer number (27882730050).

Almost surely, 2^111525160631 is an apocalyptic number.

111525160631 is a deficient number, since it is larger than the sum of its proper divisors (5759569).

111525160631 is an equidigital number, since it uses as much as digits as its factorization.

111525160631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759568.

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 111525160631 its reverse (136061525111), we get a palindrome (247586685742).

The spelling of 111525160631 in words is "one hundred eleven billion, five hundred twenty-five million, one hundred sixty thousand, six hundred thirty-one".