140631461 has 2 divisors, whose sum is σ = 140631462. Its totient is φ = 140631460.

The previous prime is 140631451. The next prime is 140631541. The reversal of 140631461 is 164136041.

140631461 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 can be written as a sum of positive squares in only one way, i.e., 113529025 + 27102436 = 10655^2 + 5206^2 .

It is a cyclic number.

It is not a de Polignac number, because 140631461 - 2²⁶ = 73522597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140631461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140631431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70315730 + 70315731.

It is an arithmetic number, because the mean of its divisors is an integer number (70315731).

Almost surely, 2^140631461 is an apocalyptic number.

It is an amenable number.

140631461 is a deficient number, since it is larger than the sum of its proper divisors (1).

140631461 is an equidigital number, since it uses as much as digits as its factorization.

140631461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 140631461 is about 11858.8136421819. The cubic root of 140631461 is about 520.0289197427.

The spelling of 140631461 in words is "one hundred forty million, six hundred thirty-one thousand, four hundred sixty-one".