140531123 has 2 divisors, whose sum is σ = 140531124. Its totient is φ = 140531122.

The previous prime is 140531119. The next prime is 140531137. The reversal of 140531123 is 321135041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140531123 - 2² = 140531119 is a prime.

It is a super-2 number, since 2×140531123² = 39497993063282258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 140531095 and 140531104.

It is not a weakly prime, because it can be changed into another prime (140531113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70265561 + 70265562.

It is an arithmetic number, because the mean of its divisors is an integer number (70265562).

Almost surely, 2^140531123 is an apocalyptic number.

140531123 is a deficient number, since it is larger than the sum of its proper divisors (1).

140531123 is an equidigital number, since it uses as much as digits as its factorization.

140531123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 140531123 is about 11854.5823629515. The cubic root of 140531123 is about 519.9052132458.

Adding to 140531123 its reverse (321135041), we get a palindrome (461666164).

The spelling of 140531123 in words is "one hundred forty million, five hundred thirty-one thousand, one hundred twenty-three".