131011123 has 2 divisors, whose sum is σ = 131011124. Its totient is φ = 131011122.

The previous prime is 131011079. The next prime is 131011169. The reversal of 131011123 is 321110131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131011123 is a prime.

It is a super-2 number, since 2×131011123² = 34327828699442258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131011193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65505561 + 65505562.

It is an arithmetic number, because the mean of its divisors is an integer number (65505562).

Almost surely, 2^131011123 is an apocalyptic number.

131011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

131011123 is an equidigital number, since it uses as much as digits as its factorization.

131011123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131011123 is about 11446.0090424567. The cubic root of 131011123 is about 507.8896816992.

Adding to 131011123 its reverse (321110131), we get a palindrome (452121254).

The spelling of 131011123 in words is "one hundred thirty-one million, eleven thousand, one hundred twenty-three".