111355451131 has 2 divisors, whose sum is σ = 111355451132. Its totient is φ = 111355451130.

The previous prime is 111355451117. The next prime is 111355451149. The reversal of 111355451131 is 131154553111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111355451131 - 2⁷ = 111355451003 is a prime.

It is a super-2 number, since 2×111355451131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111355451093 and 111355451102.

It is not a weakly prime, because it can be changed into another prime (111355451111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55677725565 + 55677725566.

It is an arithmetic number, because the mean of its divisors is an integer number (55677725566).

Almost surely, 2^111355451131 is an apocalyptic number.

111355451131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111355451131 is an equidigital number, since it uses as much as digits as its factorization.

111355451131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 31.

The spelling of 111355451131 in words is "one hundred eleven billion, three hundred fifty-five million, four hundred fifty-one thousand, one hundred thirty-one".