140807531 has 2 divisors, whose sum is σ = 140807532. Its totient is φ = 140807530.

The previous prime is 140807519. The next prime is 140807543. The reversal of 140807531 is 135708041.

It is a balanced prime because it is at equal distance from previous prime (140807519) and next prime (140807543).

It is a cyclic number.

It is not a de Polignac number, because 140807531 - 2²² = 136613227 is a prime.

It is a super-2 number, since 2×140807531² = 39653521572631922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140807494 and 140807503.

It is not a weakly prime, because it can be changed into another prime (140807551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70403765 + 70403766.

It is an arithmetic number, because the mean of its divisors is an integer number (70403766).

Almost surely, 2^140807531 is an apocalyptic number.

140807531 is a deficient number, since it is larger than the sum of its proper divisors (1).

140807531 is an equidigital number, since it uses as much as digits as its factorization.

140807531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 140807531 is about 11866.2349125576. The cubic root of 140807531 is about 520.2458539106.

The spelling of 140807531 in words is "one hundred forty million, eight hundred seven thousand, five hundred thirty-one".