140123400440431 has 4 divisors (see below), whose sum is σ = 140156193189952. Its totient is φ = 140090607690912.

The previous prime is 140123400440393. The next prime is 140123400440489. The reversal of 140123400440431 is 134044004321041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140123400440431 - 2¹⁵ = 140123400407663 is a prime.

It is a super-2 number, since 2×140123400440431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140123400440393 and 140123400440402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140123400440131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16396368351 + ... + 16396376896.

It is an arithmetic number, because the mean of its divisors is an integer number (35039048297488).

Almost surely, 2^{140123400440431} is an apocalyptic number.

140123400440431 is a deficient number, since it is larger than the sum of its proper divisors (32792749521).

140123400440431 is an equidigital number, since it uses as much as digits as its factorization.

140123400440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32792749520.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 140123400440431 its reverse (134044004321041), we get a palindrome (274167404761472).

The spelling of 140123400440431 in words is "one hundred forty trillion, one hundred twenty-three billion, four hundred million, four hundred forty thousand, four hundred thirty-one".