140246531 has 2 divisors, whose sum is σ = 140246532. Its totient is φ = 140246530.

The previous prime is 140246507. The next prime is 140246569. The reversal of 140246531 is 135642041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140246531 - 2¹⁰ = 140245507 is a prime.

It is a super-2 number, since 2×140246531² = 39338178915067922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140246531.

It is not a weakly prime, because it can be changed into another prime (140246131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70123265 + 70123266.

It is an arithmetic number, because the mean of its divisors is an integer number (70123266).

Almost surely, 2^140246531 is an apocalyptic number.

140246531 is a deficient number, since it is larger than the sum of its proper divisors (1).

140246531 is an equidigital number, since it uses as much as digits as its factorization.

140246531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 140246531 is about 11842.5728201265. The cubic root of 140246531 is about 519.5540197327.

Adding to 140246531 its reverse (135642041), we get a palindrome (275888572).

The spelling of 140246531 in words is "one hundred forty million, two hundred forty-six thousand, five hundred thirty-one".