140531434 has 16 divisors (see below), whose sum is σ = 214691616. Its totient is φ = 68972400.

The previous prime is 140531393. The next prime is 140531437. The reversal of 140531434 is 434135041.

It is a junction number, because it is equal to n+sod(n) for n = 140531399 and 140531408.

It is not an unprimeable number, because it can be changed into a prime (140531437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83469 + ... + 85135.

It is an arithmetic number, because the mean of its divisors is an integer number (13418226).

Almost surely, 2^140531434 is an apocalyptic number.

140531434 is a deficient number, since it is larger than the sum of its proper divisors (74160182).

140531434 is a wasteful number, since it uses less digits than its factorization.

140531434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 140531434 is about 11854.5954802347. The cubic root of 140531434 is about 519.9055967680.

Adding to 140531434 its reverse (434135041), we get a palindrome (574666475).

The spelling of 140531434 in words is "one hundred forty million, five hundred thirty-one thousand, four hundred thirty-four".