31003312141 has 4 divisors (see below), whose sum is σ = 32072391900. Its totient is φ = 29934232384.

The previous prime is 31003312127. The next prime is 31003312217. The reversal of 31003312141 is 14121330013.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6993809641 + 24009502500 = 83629^2 + 154950^2 .

It is a cyclic number.

It is not a de Polignac number, because 31003312141 - 2⁷ = 31003312013 is a prime.

It is a super-2 number, since 2×31003312141² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003312121) 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, 534539836 + ... + 534539893.

It is an arithmetic number, because the mean of its divisors is an integer number (8018097975).

Almost surely, 2^31003312141 is an apocalyptic number.

It is an amenable number.

31003312141 is a deficient number, since it is larger than the sum of its proper divisors (1069079759).

31003312141 is a wasteful number, since it uses less digits than its factorization.

31003312141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069079758.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31003312141 its reverse (14121330013), we get a palindrome (45124642154).

The spelling of 31003312141 in words is "thirty-one billion, three million, three hundred twelve thousand, one hundred forty-one".