140033344531 has 4 divisors (see below), whose sum is σ = 140430039912. Its totient is φ = 139636649152.

The previous prime is 140033344427. The next prime is 140033344543. The reversal of 140033344531 is 135443330041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135443330041 = 89 ⋅1521835169.

It is a cyclic number.

It is not a de Polignac number, because 140033344531 - 2⁷ = 140033344403 is a prime.

It is a super-2 number, since 2×140033344531² (a number of 23 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 = 140033344493 and 140033344502.

It is not an unprimeable number, because it can be changed into a prime (140033344631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198347161 + ... + 198347866.

It is an arithmetic number, because the mean of its divisors is an integer number (35107509978).

Almost surely, 2^140033344531 is an apocalyptic number.

140033344531 is a deficient number, since it is larger than the sum of its proper divisors (396695381).

140033344531 is an equidigital number, since it uses as much as digits as its factorization.

140033344531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396695380.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 140033344531 its reverse (135443330041), we get a palindrome (275476674572).

The spelling of 140033344531 in words is "one hundred forty billion, thirty-three million, three hundred forty-four thousand, five hundred thirty-one".