111506701531 has 2 divisors, whose sum is σ = 111506701532. Its totient is φ = 111506701530.

The previous prime is 111506701519. The next prime is 111506701547. The reversal of 111506701531 is 135107605111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111506701531 - 2⁷ = 111506701403 is a prime.

It is a super-2 number, since 2×111506701531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111506701493 and 111506701502.

It is not a weakly prime, because it can be changed into another prime (111506701591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55753350765 + 55753350766.

It is an arithmetic number, because the mean of its divisors is an integer number (55753350766).

Almost surely, 2^111506701531 is an apocalyptic number.

111506701531 is a deficient number, since it is larger than the sum of its proper divisors (1).

111506701531 is an equidigital number, since it uses as much as digits as its factorization.

111506701531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 31.

The spelling of 111506701531 in words is "one hundred eleven billion, five hundred six million, seven hundred one thousand, five hundred thirty-one".