31141154213 has 4 divisors (see below), whose sum is σ = 33536627628. Its totient is φ = 28745680800.

The previous prime is 31141154197. The next prime is 31141154237. The reversal of 31141154213 is 31245114113.

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 2383099489 + 28758054724 = 48817^2 + 169582^2 .

It is a cyclic number.

It is not a de Polignac number, because 31141154213 - 2⁴ = 31141154197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31141154263) 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, 1197736688 + ... + 1197736713.

It is an arithmetic number, because the mean of its divisors is an integer number (8384156907).

Almost surely, 2^31141154213 is an apocalyptic number.

It is an amenable number.

31141154213 is a deficient number, since it is larger than the sum of its proper divisors (2395473415).

31141154213 is a wasteful number, since it uses less digits than its factorization.

31141154213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395473414.

The product of its digits is 1440, while the sum is 26.

Adding to 31141154213 its reverse (31245114113), we get a palindrome (62386268326).

The spelling of 31141154213 in words is "thirty-one billion, one hundred forty-one million, one hundred fifty-four thousand, two hundred thirteen".