140631093 has 8 divisors (see below), whose sum is σ = 208342400. Its totient is φ = 93754044.

The previous prime is 140631079. The next prime is 140631109. The reversal of 140631093 is 390136041.

It is not a de Polignac number, because 140631093 - 2⁴ = 140631077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5208559 = 140631093 / (1 + 4 + 0 + 6 + 3 + 1 + 0 + 9 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140631013) 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 in 7 ways as a sum of consecutive naturals, for example, 2604253 + ... + 2604306.

It is an arithmetic number, because the mean of its divisors is an integer number (26042800).

Almost surely, 2^140631093 is an apocalyptic number.

It is an amenable number.

140631093 is a deficient number, since it is larger than the sum of its proper divisors (67711307).

140631093 is an equidigital number, since it uses as much as digits as its factorization.

140631093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208568 (or 5208562 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 140631093 is about 11858.7981262858. The cubic root of 140631093 is about 520.0284661438.

The spelling of 140631093 in words is "one hundred forty million, six hundred thirty-one thousand, ninety-three".