2140636431 has 8 divisors (see below), whose sum is σ = 2854462464. Its totient is φ = 1426950680.

The previous prime is 2140636429. The next prime is 2140636441. The reversal of 2140636431 is 1346360412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2140636431 - 2¹ = 2140636429 is a prime.

It is a super-2 number, since 2×2140636431² = 9164648659448835522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140636441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8146 + ... + 65936.

It is an arithmetic number, because the mean of its divisors is an integer number (356807808).

Almost surely, 2^2140636431 is an apocalyptic number.

2140636431 is a deficient number, since it is larger than the sum of its proper divisors (713826033).

2140636431 is a wasteful number, since it uses less digits than its factorization.

2140636431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70141.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 2140636431 is about 46267.0123414080. The cubic root of 2140636431 is about 1288.7864779132.

Adding to 2140636431 its reverse (1346360412), we get a palindrome (3486996843).

The spelling of 2140636431 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, four hundred thirty-one".