140710531 has 4 divisors (see below), whose sum is σ = 151534432. Its totient is φ = 129886632.

The previous prime is 140710529. The next prime is 140710571. The reversal of 140710531 is 135017041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135017041 = 47 ⋅2872703.

It is a cyclic number.

It is not a de Polignac number, because 140710531 - 2¹ = 140710529 is a prime.

It is a super-2 number, since 2×140710531² = 39598907068603922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140710511) 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, 5411931 + ... + 5411956.

It is an arithmetic number, because the mean of its divisors is an integer number (37883608).

Almost surely, 2^140710531 is an apocalyptic number.

140710531 is a deficient number, since it is larger than the sum of its proper divisors (10823901).

140710531 is a wasteful number, since it uses less digits than its factorization.

140710531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823900.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 140710531 is about 11862.1469810486. The cubic root of 140710531 is about 520.1263635211.

Adding to 140710531 its reverse (135017041), we get a palindrome (275727572).

The spelling of 140710531 in words is "one hundred forty million, seven hundred ten thousand, five hundred thirty-one".