140311031 has 16 divisors (see below), whose sum is σ = 163031040. Its totient is φ = 118272960.

The previous prime is 140311007. The next prime is 140311043. The reversal of 140311031 is 130113041.

It is a cyclic number.

It is not a de Polignac number, because 140311031 - 2¹⁰ = 140310007 is a prime.

It is a super-2 number, since 2×140311031² = 39374370840565922, 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 = 140310997 and 140311015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140311001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269051 + ... + 269571.

It is an arithmetic number, because the mean of its divisors is an integer number (10189440).

Almost surely, 2^140311031 is an apocalyptic number.

140311031 is a deficient number, since it is larger than the sum of its proper divisors (22720009).

140311031 is an equidigital number, since it uses as much as digits as its factorization.

140311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 140311031 is about 11845.2957329060. The cubic root of 140311031 is about 519.6336559230.

Adding to 140311031 its reverse (130113041), we get a palindrome (270424072).

The spelling of 140311031 in words is "one hundred forty million, three hundred eleven thousand, thirty-one".