140866031 has 2 divisors, whose sum is σ = 140866032. Its totient is φ = 140866030.

The previous prime is 140865973. The next prime is 140866073. The reversal of 140866031 is 130668041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140866031 - 2¹⁰ = 140865007 is a prime.

It is a super-2 number, since 2×140866031² = 39686477379385922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 140865985 and 140866003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140866091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70433015 + 70433016.

It is an arithmetic number, because the mean of its divisors is an integer number (70433016).

Almost surely, 2^140866031 is an apocalyptic number.

140866031 is a deficient number, since it is larger than the sum of its proper divisors (1).

140866031 is an equidigital number, since it uses as much as digits as its factorization.

140866031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 140866031 is about 11868.6996339110. The cubic root of 140866031 is about 520.3178911765.

The spelling of 140866031 in words is "one hundred forty million, eight hundred sixty-six thousand, thirty-one".