111305045031 has 16 divisors (see below), whose sum is σ = 149337995904. Its totient is φ = 73737856224.

The previous prime is 111305045023. The next prime is 111305045039. The reversal of 111305045031 is 130540503111.

It is an interprime number because it is at equal distance from previous prime (111305045023) and next prime (111305045039).

It is not a de Polignac number, because 111305045031 - 2³ = 111305045023 is a prime.

It is a super-2 number, since 2×111305045031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111305044992 and 111305045010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111305045039) 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, 5362285 + ... + 5383001.

It is an arithmetic number, because the mean of its divisors is an integer number (9333624744).

Almost surely, 2^111305045031 is an apocalyptic number.

111305045031 is a deficient number, since it is larger than the sum of its proper divisors (38032950873).

111305045031 is a wasteful number, since it uses less digits than its factorization.

111305045031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31870.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 111305045031 its reverse (130540503111), we get a palindrome (241845548142).

The spelling of 111305045031 in words is "one hundred eleven billion, three hundred five million, forty-five thousand, thirty-one".