140323434431 has 16 divisors (see below), whose sum is σ = 150815513856. Its totient is φ = 130312800000.

The previous prime is 140323434413. The next prime is 140323434439. The reversal of 140323434431 is 134434323041.

It is a cyclic number.

It is not a de Polignac number, because 140323434431 - 2⁶ = 140323434367 is a prime.

It is a super-2 number, since 2×140323434431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140323434439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827420 + ... + 982481.

It is an arithmetic number, because the mean of its divisors is an integer number (9425969616).

Almost surely, 2^140323434431 is an apocalyptic number.

140323434431 is a deficient number, since it is larger than the sum of its proper divisors (10492079425).

140323434431 is a wasteful number, since it uses less digits than its factorization.

140323434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810034.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 140323434431 its reverse (134434323041), we get a palindrome (274757757472).

The spelling of 140323434431 in words is "one hundred forty billion, three hundred twenty-three million, four hundred thirty-four thousand, four hundred thirty-one".