140540031 has 6 divisors (see below), whose sum is σ = 203002280. Its totient is φ = 93693348.

The previous prime is 140540009. The next prime is 140540033. The reversal of 140540031 is 130045041.

It is a happy number.

140540031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140540031 - 2¹⁸ = 140277887 is a prime.

It is a super-2 number, since 2×140540031² = 39503000626961922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140539986 and 140540013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140540033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7807771 + ... + 7807788.

Almost surely, 2^140540031 is an apocalyptic number.

140540031 is a deficient number, since it is larger than the sum of its proper divisors (62462249).

140540031 is a wasteful number, since it uses less digits than its factorization.

140540031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15615565 (or 15615562 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 140540031 is about 11854.9580766867. The cubic root of 140540031 is about 519.9161982805.

Adding to 140540031 its reverse (130045041), we get a palindrome (270585072).

The spelling of 140540031 in words is "one hundred forty million, five hundred forty thousand, thirty-one".