140056531 has 2 divisors, whose sum is σ = 140056532. Its totient is φ = 140056530.

The previous prime is 140056529. The next prime is 140056537. The reversal of 140056531 is 135650041.

140056531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140056531 - 2¹ = 140056529 is a prime.

It is a super-2 number, since 2×140056531² = 39231663751507922, which contains 22 as substring.

Together with 140056529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 140056496 and 140056505.

It is not a weakly prime, because it can be changed into another prime (140056537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70028265 + 70028266.

It is an arithmetic number, because the mean of its divisors is an integer number (70028266).

Almost surely, 2^140056531 is an apocalyptic number.

140056531 is a deficient number, since it is larger than the sum of its proper divisors (1).

140056531 is an equidigital number, since it uses as much as digits as its factorization.

140056531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 140056531 is about 11834.5481958544. The cubic root of 140056531 is about 519.3192905145.

The spelling of 140056531 in words is "one hundred forty million, fifty-six thousand, five hundred thirty-one".