140220312131 has 4 divisors (see below), whose sum is σ = 140285201064. Its totient is φ = 140155423200.

The previous prime is 140220312103. The next prime is 140220312139. The reversal of 140220312131 is 131213022041.

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 140220312131 - 2¹⁰ = 140220311107 is a prime.

It is a super-2 number, since 2×140220312131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140220312139) 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, 32441225 + ... + 32445546.

It is an arithmetic number, because the mean of its divisors is an integer number (35071300266).

Almost surely, 2^140220312131 is an apocalyptic number.

140220312131 is a deficient number, since it is larger than the sum of its proper divisors (64888933).

140220312131 is an equidigital number, since it uses as much as digits as its factorization.

140220312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64888932.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 140220312131 its reverse (131213022041), we get a palindrome (271433334172).

The spelling of 140220312131 in words is "one hundred forty billion, two hundred twenty million, three hundred twelve thousand, one hundred thirty-one".