20140311031 has 4 divisors (see below), whose sum is σ = 21015976752. Its totient is φ = 19264645312.

The previous prime is 20140311001. The next prime is 20140311041. The reversal of 20140311031 is 13011304102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20140311031 - 2³¹ = 17992827383 is a prime.

It is a super-2 number, since 2×20140311031² (a number of 21 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 = 20140310996 and 20140311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140311001) 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, 437832826 + ... + 437832871.

It is an arithmetic number, because the mean of its divisors is an integer number (5253994188).

Almost surely, 2^20140311031 is an apocalyptic number.

20140311031 is a deficient number, since it is larger than the sum of its proper divisors (875665721).

20140311031 is an equidigital number, since it uses as much as digits as its factorization.

20140311031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875665720.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20140311031 its reverse (13011304102), we get a palindrome (33151615133).

The spelling of 20140311031 in words is "twenty billion, one hundred forty million, three hundred eleven thousand, thirty-one".