140312087 has 2 divisors, whose sum is σ = 140312088. Its totient is φ = 140312086.

The previous prime is 140312083. The next prime is 140312099. The reversal of 140312087 is 780213041.

It is a weak prime.

It is an emirp because it is prime and its reverse (780213041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140312087 - 2² = 140312083 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140312083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70156043 + 70156044.

It is an arithmetic number, because the mean of its divisors is an integer number (70156044).

Almost surely, 2^140312087 is an apocalyptic number.

140312087 is a deficient number, since it is larger than the sum of its proper divisors (1).

140312087 is an equidigital number, since it uses as much as digits as its factorization.

140312087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 140312087 is about 11845.3403074796. The cubic root of 140312087 is about 519.6349595310.

The spelling of 140312087 in words is "one hundred forty million, three hundred twelve thousand, eighty-seven".