140887431 has 10 divisors (see below), whose sum is σ = 210461592. Its totient is φ = 93924900.

The previous prime is 140887429. The next prime is 140887433. The reversal of 140887431 is 134788041.

140887431 is a `hidden beast` number, since 140 + 8 + 87 + 431 = 666.

It is an interprime number because it is at equal distance from previous prime (140887429) and next prime (140887433).

It is not a de Polignac number, because 140887431 - 2¹ = 140887429 is a prime.

It is a super-2 number, since 2×140887431² = 39698536427559522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140887433) 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 9 ways as a sum of consecutive naturals, for example, 869595 + ... + 869756.

Almost surely, 2^140887431 is an apocalyptic number.

140887431 is a deficient number, since it is larger than the sum of its proper divisors (69574161).

140887431 is an equidigital number, since it uses as much as digits as its factorization.

140887431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739363 (or 1739354 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 140887431 is about 11869.6011306193. The cubic root of 140887431 is about 520.3442382880.

The spelling of 140887431 in words is "one hundred forty million, eight hundred eighty-seven thousand, four hundred thirty-one".