31000212141 has 4 divisors (see below), whose sum is σ = 41333616192. Its totient is φ = 20666808092.

The previous prime is 31000212137. The next prime is 31000212143. The reversal of 31000212141 is 14121200013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31000212141 - 2² = 31000212137 is a prime.

It is a super-2 number, since 2×31000212141² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31000212141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000212143) 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, 5166702021 + ... + 5166702026.

It is an arithmetic number, because the mean of its divisors is an integer number (10333404048).

Almost surely, 2^31000212141 is an apocalyptic number.

It is an amenable number.

31000212141 is a deficient number, since it is larger than the sum of its proper divisors (10333404051).

31000212141 is a wasteful number, since it uses less digits than its factorization.

31000212141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10333404050.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 31000212141 its reverse (14121200013), we get a palindrome (45121412154).

The spelling of 31000212141 in words is "thirty-one billion, two hundred twelve thousand, one hundred forty-one".